Person Page - 1779

     Birger Magnusson (?) Jarl of Bjalbo, Regent of Sweden was born circa 1200.^3,4 He married Ingeborg Eriksdotter (?) of Sweden, daughter of Erik X Knutson (?) King of Sweden and Rikissa/Rixa/Richeza (?) of Denmark, between 1235 and 1240
; his 1st wife; Genealogy.EU (Sweden 4 page) says m. ca 1235.^2,3,6,4,7 Birger Magnusson (?) Jarl of Bjalbo, Regent of Sweden married Matilda/Mechtild (?) von Holstein, daughter of Adolf IV (?) Graf von Holstein, Graf von Schaumburg and Heilwig/Hedwig (?) von der Lippe, in 1261
; his 2nd wife; her 2nd husband.^8,9,3,10,4
Birger Magnusson (?) Jarl of Bjalbo, Regent of Sweden died on 1 October 1266.^2,3,4
      ; Jarl of Bjalbo, Regent of Sweden, founder of Stockholm, *ca 1200, +1266; 1m: ca 1235 Ingeborg of Sweden (+1254); 2m: 1261 Mechtild von Holstein (*1225 +1288.)³

; Leo van de Pas cites: 1. Stammtafeln zur Geschichte der Europäischen Staaten, 4 volumes, Marburg, 1953, 1975., W. K. Prinz von Isenburg, Reference: II 78
2. Nachkommen Gorms des Alten 1978. , S. Otto Brenner, Reference: 182.⁴ He was Regent of Sweden in 1251.²

     Christine (?) Princess of Norway was born in 1234.^1,2 She married Felipe (?) Infante de Castile y Leon, sn de Valdecorneja, son of Saint Ferdinand III (?) King of Castile & Leon and Elizabeth von Hohenstaufen, in 1258.^1,3,4,2

Christine (?) Princess of Norway died in 1262 at Sevills, Provincia de Sevilla, Andalucia, Spain (now).^1,2

     Felipe (?) Infante de Castile y Leon, sn de Valdecorneja was born after 1231.¹ He married Christine (?) Princess of Norway, daughter of Hakon IV Hakonsson "the Old" (?) King of Norway and Margareta Skulesdotter (?), in 1258.^2,3,1,4
Felipe (?) Infante de Castile y Leon, sn de Valdecorneja married Eleanor de Castro, daughter of Alvar de Castro sn de Cigales, before 1269
; his 2nd wife.¹
Felipe (?) Infante de Castile y Leon, sn de Valdecorneja died in 1274.¹
     He was Archbishop of Seville.¹

; Inft Felipe, sn de Valdecorneja, Archbishop of Seville, *after 1231, +1274; 1m: 1258 Pss Christine of Norway (*1234 +1262); 2m: before 1269 Leonor (+Santaolalla after 27.4.1275) dau.of Alvar de Castro, sn de Cigales.¹ Felipe (?) Infante de Castile y Leon, sn de Valdecorneja was also known as Philip (?) of Spain.^2,1

     Ingeborg Håkonsdatter (?) of Norway was born in 1301.^1,2,5 She married Erik Magnusson (?) Duke of Södermanland, son of Magnus II Ladulas "Lock-barn" (?) King of Sweden and Hedwig (?) of Holstein, on 29 September 1312
; her 1st husband.^6,2,5,7 Ingeborg Håkonsdatter (?) of Norway married Knut Porse (?) Duke of South Holland in 1327
; her 2nd husband.^1,5
Ingeborg Håkonsdatter (?) of Norway died circa 17 June 1361.^1,2,5
      ; Leo van de Pas cites: Nachkommen Gorms des Alten 1978. , S. Otto Brenner, Reference: 786.²

; Ingeborg, *1301, +after 1360; 1m: 1312 Duke Erik of Sweden (+1318); 2m: 1327 Knut Porsa, Duke of South Halland (+1330); by her 1st husband she was ancestress of subsequent Kings of Norway and Sweden.⁵

     Knut Porse (?) Duke of South Holland married Ingeborg Håkonsdatter (?) of Norway, daughter of Hakon V Magnusson (?) King of Norway and Euphemia (?) von Rügen, in 1327
; her 2nd husband.^1,2
Knut Porse (?) Duke of South Holland died in 1330.^1,2
     He was Duke of South Holland.¹

     Erik Magnusson (?) Duke of Södermanland was born circa 1282.² He married Ingeborg Håkonsdatter (?) of Norway, daughter of Hakon V Magnusson (?) King of Norway and Euphemia (?) von Rügen, on 29 September 1312
; her 1st husband.^1,4,5,2
Erik Magnusson (?) Duke of Södermanland died in 1318; murdered.^1,3,5,2
      ; Erik, Duke in Sweden, *ca 1282, +murdered 1318; m.1312 Ingeborg of Norway (*1301 +after 1360.)²

     Magnus II Ladulas "Lock-barn" (?) King of Sweden was born in 1240.^1,2 He married Hedwig (?) of Holstein, daughter of Gerhard I (?) Graf von Holstein-Itzehoe and Elisabeth (?) von Mecklenburg, in 1276.^1,5,2

Magnus II Ladulas "Lock-barn" (?) King of Sweden died in 1290.^2,1
      ; Magnus II Ladulas "Lock-barn", King of Sweden (1275-90), *1240, +1290; m.1276 Hedwig von Holstein (+1324.)² He was King of Sweden between 1275 and 1290.^1,2

     Hedwig (?) of Holstein married Magnus II Ladulas "Lock-barn" (?) King of Sweden, son of Birger Magnusson (?) Jarl of Bjalbo, Regent of Sweden and Ingeborg Eriksdotter (?) of Sweden, in 1276.^5,2,6

Hedwig (?) of Holstein died circa 1325.^5,2

     Gerhard I (?) Graf von Holstein-Itzehoe was born in 1232.² He married Elisabeth (?) von Mecklenburg, daughter of Johann I (?) Fürst von Mecklenburg, Herr von Rostock und Wismar and Luitgard (?) von Henneberg, in 1250
;
His 1st wife. Genealogics says m. 1250; Genealogy.EU Meckl 1 page says m. ca 1249.^7,2,8,4,6 Gerhard I (?) Graf von Holstein-Itzehoe married Alessina del Monferrato, daughter of Boniface II 'the Giant' del Monferrato Marchese del Monferrato and Margareta (?) de Savoie, between 1280 and 1282
;
Her 2nd husband, his 2nd wife.^2,9,10,6
Gerhard I (?) Graf von Holstein-Itzehoe died on 21 December 1290.^2,8
      ; Per Wikipedia:
     "Gerhard I, Count of Holstein-Itzehoe (1232 – 21 December 1290) was the only count of Holstein-Itzehoe.
Life
     "He was the second son of Count Adolf IV of Holstein and Heilwig of Lippe.
     "When his father retired to a monastery in 1238, he ruled the Holstein jointly with his elder brother John I, initially under the guardianship of their uncle the Duke Abel of Schleswig. When they came of age, the brothers took up government and continue their joint rule. In 1255, they concluded a trade agreement with Lübeck.
     "When their father died in 1261, John and Gerhard divided Holstein. Gerhard took Holstein-Itzehoe, consisting of the districts of Stormarn, Plön and Schaumburg, with his residence in Itzehoe. John received Holstein-Kiel, consisting of the districts Kiel, Wagria and East Holstein, with his seat in Kiel. John later won Rendsburg back from Denmark and traded it with Gerhard for Segeberg.
     "Gerhard founded several villages, in order to develop Holstein and control the area. He also developed the County's administration. He fought ward with the Archdiocese of Bremen, the City of Lübeck and the landed gentry in his county. In 1262, he won the Battle of the Loh Moor. In 1263, John died and Gerhard became regent of Kiel and Segeberg for John's sons.
     "Gerhard I died in 1290. After his death, his sons subdivided Holstein-itzehoe into Holstein-Plön, Holstein-Pinneberg and Holstein-Rendsburg.
Seal
     "The inscription on his seal reads: S(IGILLUM)* GERARDI*COMITIS*HOLTSATIE*ET*DE*SCOWENB(O)RCH ("Seal of Count Gerhard of Holstein and Schauenburg").
Marriages and issue
     "He married around 1250 with Elizabeth (d. c.?1280), a daughter of John I of Mecklenburg and had the following children with her:
     "Around 1280, he married Adelaide (Alessia; c.?1237 – 1285), the widow of Albert I, Duke of Brunswick-Lüneburg, and a daughter of Marquess Boniface II of Monferrat (c.?1203 – 1253). This marriage remained childless.
References
** K. Jansen (1878), "Gerhard I. (Graf von Holstein und in Schauenburg)", Allgemeine Deutsche Biographie (ADB) (in German), 8, Leipzig: Duncker & Humblot, p. 737
** Wilhelm Koppe (1964), "Gerhard I.", Neue Deutsche Biographie (NDB) (in German), 6, Berlin: Duncker & Humblot, pp. 265–266
External links
** Media related to Gerhard I, Count of Holstein-Itzehoe at Wikimedia Commons: https://commons.wikimedia.org/wiki/Category:Gerhard_I,_Count_of_Holstein-Itzehoe
** Entry at genealogie-mittelalter.de: https://www.genealogie-mittelalter.de/."¹¹

; Per Med Lands:
     "GERHARD von Holstein, son of ADOLF IV Graf von Holstein und Stormarn & his wife Hedwig zur Lippe (-21 Dec 1290, bur Hamburg Marienkloster). "Adolfus…comes Holtsatie" donated property to St Johanniskloster, Lübeck, with the consent of "Johanne filio nostro…[et] Heilewigis uxoris nostre et heredum nostrorum Gerardi et Ludolfi…etiam domini Alberti ducis Saxonie", by charter dated [21 Jul] 1238[122]. The Annales Stadenses names (in order) "puerolos Iohannem, Gerardum et Liuderum" as children of "comes Adolfus de Scowenburg" who named "generum suum Abel ducem Daciæ" as their tutor when he became a monk[123]. The Chronicon Holtzatiæ records that "comes Gherardus [filius Adolphi]" received "terram Holtzacie, Idzeho, paludem Wilstrie, Hanrouwe, Rendelsborg" as his share of his father's lands[124]. Graf von Holstein, Stormarn, Wagrien und Schaumburg. "Johannes et Gerhardus…comites in Schowenborgh" confirmed an exchange of property involving the Marienkloster Rinteln, on the advice of "patrui nostri Brunonis Hamburgensis et Lubecensis prepositi", by charter dated 11 Jan 1243[125]. "Gerhardus comes Holtsacie et Scowenborgh" confirmed donations to the church of Hamburg, with the consent of "domine Elisabeth relicte fratre nostri, comitis Johannis, eiusque filiorum Adolfi, Johannis et Alberti fratruelium nostrorum…filiorum nostrorum Johannis et Gherardi", by charter dated 16 Jul 1265[126]. "Gerhardus et Johannes comites Holsatie" confirmed property held by "Herboldus de Herboldessen", with the consent of "heredum nostrorum…Ludgardis ducisse de Luneburg, Elisabeth comitisse de Welpia, Gerhardi, Adolphi, Henrici, Alberti, filiorum nostrorum et…heredis fratris nostri Joannis…Heilwigis uxoris domini Ottonis Marchionis, Agnete uxoris domini de Rostock, Adolphi et Alberti et aliarum filiarum nostrarum Heilewigis et Mechtildis", by charter dated 17 Aug 1272[127]. “Gherardus senior et Gherardus iunior filius eius...comites Holtzatie” sold property to Lübeck Cathedral, with the consent of “Adolfus, Hinricus, Bruno et Otto filii senioris comitis...cum fratribus et sororibus nostris”, by charter dated 16 May 1286[128].
     "m firstly ([1250]) ELISABETH von Mecklenburg, daughter of JOHANN I Fürst von Mecklenburg Herr von Rostock und Wismar & his wife Luitgard von Henneberg (-before 6 Feb 1280). The Cronica Principum Saxonie refers to the wife of "Gerardus" as "filiam Nicolai de Sclavia"[129]. The primary source which confirms her name has not yet been identified.
     "m secondly (1282) as her second husband, ALESSINA di Monferrato, widow of ALBRECHT I "der Große" Herzog von Braunschweig und Lüneburg, daughter of BONIFACIO II Marchese di Monferrato & his wife Marguerite de Savoie (-6 Feb 1285, bur Braunschweig). The Cronica Principum Saxonie names "relictam Alberti ducis de Brunsvic Aleidem filiam marchionis Montis-Ferrati" as the second wife of "Gerardus"[130]."
Med Lands cites:

Reference: Genealogics cites: Stammtafeln zur Geschichte der Europäischen Staaten, 4 volumes, Marburg, 1953, 1975., W. K. Prinz von Isenburg, Reference: I 87.⁴
; Per Racines et Histoire: "Alessina di Monferrato ° ~1237/40 + 06/02/1285
     ép. 1) 1263 (Kenilworth) duc (herzog) Albrecht 1er von Braunschweig-Lünebuirg «der Löwe» ° 1236 + 15/08/1279
     ép. 2) 1280 graf Gerhardt 1er von HolsteinItzehoe ° 1231/32 + 21/12/1290."¹²
; Per Med Lands:
     "ALESSINA (-6 Feb 1285). The testament of "Bonefacius Montisferrati marchio", dated 12 Jun 1253, bequeathes property to "Alaxinam filiam meam inpuberem", appoints "Guilelminum filium meum inpuberem" as his heir, substituting in turn "Alaxinam…filia mea" and "Tomam de Saluciis", if his son died childless[222]. The marriage contract between “duci Bruneswik” and “sororem marchionis Montis Ferati” is dated 6 Oct 1262[223]. The Annales Londonienses record the marriage in 1267 of "dux de Bruneswiche" and "filiam Marchisi de Monteferato, cognatam regine" at Kenilworth[224]. The Cronica Principum Saxonie names "filiam marchionis Montis-Ferrati Aleidem" as second wife of "Albertus"[225]. The Cronica Principum Saxonie names "relictam Alberti ducis de Brunsvic Aleidem filiam marchionis Montis-Ferrati" as the second wife of "Gerardus"[226]. The Libro Memoriarum Sancti Blasii records the death in Feb 1285 of "Allexina ducissa in Brunswich et cometissa Holsacie, soror comitis Montisferranum"[227].
     "m firstly (contract 6 Oct 1262, Kenilworth 1 Nov 1266) as his second wife, ALBRECHT I "der Große" Herzog von Braunschweig und Lüneburg, son of OTTO I “dem Kind” Herzog von Braunschweig & his wife Mathilde von Brandenburg [Askanier] (1236-Braunschweig 15 Aug 1279, bur Braunschweig Cathedral).
     "m secondly (1282) as his second wife, GERHARD I Graf von Holstein-Schauenburg zu Itzehoe, son of ADOLF IV Graf von Holstein und Stormarn & his wife Hedwig zur Lippe (1232-21 Dec 1290)."
Med Lands cites: As of between 1238 and 1261, Gerhard I (?) Graf von Holstein-Itzehoe lived at an unknown place ; Count of Holstein with his brother John I.¹¹ He was Count of Schamberg with his brother John I between 1238 and 1290.¹¹ He was Count of Holstein-Itzehoe between 1261 and 1290.^2,11

     Magnus VII/II Eriksson "Smek" (?) King of Norway (VII), Sweden (II) was born in 1316.^1,4,2 He married Blanche de Dampierre Comtesse de Namur, daughter of Jean I de Dampierre Comte de Namur and Marie d'Artois Lady of Merode, in 1335.^5,6,2

Magnus VII/II Eriksson "Smek" (?) King of Norway (VII), Sweden (II) died in December 1374; drowned.^1,4,2
      ; Magnus III "Smek", King of Sweden (1319-63), King of Norway (1319-44) as Magnus VII, *1316, +drowned XII.1374; m.1335 Blanche de Namur (+1363) dau.of Cte Jean de Namur (?)² Magnus VII/II Eriksson "Smek" (?) King of Norway (VII), Sweden (II) was also known as Magnus VII (?) King of Norway.^4,7 Magnus VII/II Eriksson "Smek" (?) King of Norway (VII), Sweden (II) was also known as Magnus II (?) King of Sweden.⁸ He was King of Norway as Magnus VII between 1319 and 1344.^1,4,2 He was King of Sweden as Magnus II between 1319 and 1363.^1,2

     Ingeborg (?) of Norway was born in 1297.^1,2 She married Waldemar (?) Duke of Finland, son of Magnus II Ladulas "Lock-barn" (?) King of Sweden and Hedwig (?) of Holstein, in 1312
; his 2nd wife.^3,2,4
Ingeborg (?) of Norway died after 1353.²
      ; [2m.] Ingeborg, *1297, +after 1353; m.Waldemar, Duke of Finland (+1318.)²

     Waldemar (?) Duke of Finland married Christina (?), daughter of Thorkel/Tyrgil Knutson (?), in 1302
; his 1st wife.^3,2 Waldemar (?) Duke of Finland and Christina (?) were divorced in 1305.⁴ Waldemar (?) Duke of Finland married Ingeborg (?) of Norway, daughter of Erik II Magnusson (?) King of Norway and Isabella de Brus, in 1312
; his 2nd wife.^1,5,2
Waldemar (?) Duke of Finland died in 1318; murdered.^1,3,5,2
     He was Duke of Finland.^6,4

     Christina (?) married Waldemar (?) Duke of Finland, son of Magnus II Ladulas "Lock-barn" (?) King of Sweden and Hedwig (?) of Holstein, in 1302
; his 1st wife.^1,2 Christina (?) and Waldemar (?) Duke of Finland were divorced in 1305.³

     Ingeborg (?) of Sweden married Eric VI Maendved (?) King of Denmark, son of Erik V-VII "Klipping" (?) King of Denmark and Agnes (?) von Brandenburg, in 1296.^1,3,4,2

Ingeborg (?) of Sweden died in 1319.^1,2

     Eric VI Maendved (?) King of Denmark was born in 1274.^1,2,3 He married Ingeborg (?) of Sweden, daughter of Magnus II Ladulas "Lock-barn" (?) King of Sweden and Hedwig (?) of Holstein, in 1296.^6,4,3,7

Eric VI Maendved (?) King of Denmark died in 1319.^1,2,3
      ; King Erik VI Maendved of Denmark (1286-1319), *1274, +13.11.1319; m.1296 Ingeborg of Sweden (+1319)
- Waldemar, +1302
- Erik, +young
- Magnus, +young
- a son, *and +1318.³


; King of Denmark.^1,2,3

     Christopher II (?) King of Denmark was born on 29 September 1276.^1,4,2 He married Euphemia (?) von Pommern, daughter of Bogislaw IV (?) Duke of Pomerania-Wolgast and Marguerite (?) von Rugen, before 1307.^1,2,5

Christopher II (?) King of Denmark died on 2 August 1332 at age 55.^1,4,2
      ; King of Denmark. Ashley (p. 739) says deposed in 1330 and restored in 1332; Genealogy.EU (Denmark 3 page) says King of Denmark 1320-26 and 1329-32.^1,4,2

     Euphemia (?) von Pommern was born in 1285.⁷ She married Christopher II (?) King of Denmark, son of Erik V-VII "Klipping" (?) King of Denmark and Agnes (?) von Brandenburg, before 1307.^1,7,5

Euphemia (?) von Pommern died on 26 July 1330.^1,7,5
     Reference: Genealogics cites: Nachkommen Gorms des Alten, 1978 , Brenner, S. Otto. 926.⁵ Euphemia (?) von Pommern was also known as Euphemia (?) von Pommern.⁵

     Bogislaw IV (?) Duke of Pomerania-Wolgast was born circa 1255; Pomer 1 page says b. ca 1255; Leo van de Pas says b. 1255/58.^5,3 He married Mechtild (?) von Brandenburg, daughter of Johann I (?) Margrave of Brandenburg and Jutta (?) of Saxony, before 14 December 1278
; his 1st wife.^5,6,7,3 Bogislaw IV (?) Duke of Pomerania-Wolgast married Marguerite (?) von Rugen, daughter of Wizlaw II (?) Fürst von Rügen, Duke von Pommern and Agnes (?) von Braunschweig-Lüneburg, between 1283 and 1284
; his 2nd wife; Leo van de Pas says b. ca 1287.^2,8,3
Bogislaw IV (?) Duke of Pomerania-Wolgast died on 19 February 1309.^5,6
      ; Duke Bogislaw IV of Pomerania-Wolgast (1278-1309), *ca 1255, +19.2.1309; 1m: Mechtild von Brandenburg (+1278), dau.of Johann I von Brandenburg; 2m: 1283/84 Marguerite von Rügen (*ca 1265 +4.12.1315/1318/3.2.1320), dau.of Wizlav II von Rügen and Agnes von Braunschweig-Lüneburg.²

; Leo van de Pas cites: 1. Nachkommen Gorms des Alten 1978. , S. Otto Brenner, Reference: 534
2. Europäische Stammtafeln, J.A. Stargardt Verlag Marburg., Detlev Schwennicke, Editor, Reference: III 1
3. Stammtafeln zur Geschichte der Europäischen Staaten, 4 volumes, Marburg, 1953, 1975., W. K. Prinz von Isenburg, Reference: I 125.³ He was Duke von Pommern-Wolgast between 1278 and 1309.^1,5,3

     Margareta (?) of Denmark married Birger (?) King of Sweden, son of Magnus II Ladulas "Lock-barn" (?) King of Sweden and Hedwig (?) of Holstein, in 1298.^4,2,5

Margareta (?) of Denmark died in 1341.^1,4,6

     Birger (?) King of Sweden was born in 1280.^1,2 He married Margareta (?) of Denmark, daughter of Erik V-VII "Klipping" (?) King of Denmark and Agnes (?) von Brandenburg, in 1298.^1,3,2

Birger (?) King of Sweden died in 1321.^1,2
      ; King of Sweden, exiled in 1319.^1,2

     Magnus (?) was born in 1300.^2,1
     He was living in 1320; murdered.^2,1

     Konrad I (?) Markgraf von Brandenburg was born circa 1240.¹ He married Konstancja (?) of Poland, daughter of Przemyslaw I (?) Duke of Poland and Elisabeth (?) von Schlesien-Breslau, in 1260 at Zantoch.^5,1,6,2

Konrad I (?) Markgraf von Brandenburg died between 15 March 1304 and 21 May 1304 at Schwedt.^1,2
      ; Leo van de Pas cites: 1. Nachkommen Gorms des Alten 1978. , S. Otto Brenner, Reference: 295
2. Stammtafeln zur Geschichte der Europäischen Staaten, 4 volumes, Marburg, 1953, 1975., W. K. Prinz von Isenburg, Reference: I 59
3. The Lineage and Ancestry of H.R.H. Prince Charles, Prince of Wales Edinburgh, 1977., Gerald Paget, Reference: Q 92948.¹

; Mgve Konrad of Brandenburg (1267-1304), +Schwedt 15.3./21.5.1304; m.Zantoch 1260 Konstanze of Poland (+8.10.1281.)² He was Markgraf von Brandenburg between 1266 and 1304.^1,2

     Ingeborg Eriksdotter (?) of Sweden was born in 1212.³ She married Birger Magnusson (?) Jarl of Bjalbo, Regent of Sweden, son of Magnus Minneskjold (?) of Bjalbo and Ingrid Ylva (?), between 1235 and 1240
; his 1st wife; Genealogy.EU (Sweden 4 page) says m. ca 1235.^1,6,2,7,3
Ingeborg Eriksdotter (?) of Sweden died in 1254.^1,2,3
      ; Leo van de Pas cites: 1. Stammtafeln zur Geschichte der Europäischen Staaten, 4 volumes, Marburg, 1953, 1975., W. K. Prinz von Isenburg, Reference: II 77
2. Nachkommen Gorms des Alten 1978. , S. Otto Brenner, Reference: 540.³

     Alard de Mortagne died circa 1144.¹
      ; a priest.¹

     Waldemar I (?) King of Sweden was born in 1243.¹ He married Sophia (?) of Denmark, daughter of Erik IV "Ploughpenny" (?) King of Denmark and Jutta (?) von Sachsen, Queen of Denmark, in 1250
; his 1st wife; Genealogy.EU (Denmark 3 page) says m. 1260.^1,2,4 Waldemar I (?) King of Sweden married Lucardis (?)
; his 2nd wife.²
Waldemar I (?) King of Sweden died in 1302.^1,2
      ; Valdemar I, King of Sweden (1250-75), +1302; 1m: 1250 Sophie of Denmark (*1235 +1286); 2m: Lucardis N; all kids were by 1m.² Waldemar I (?) King of Sweden was also known as Valdemar I (?) King of Sweden.⁵ He was King of Sweden between 1250 and 1275.^1,2

     Katarina/Catherine (?) of Sweden was born in 1245.⁴ She married Siegfried I (?) Fürst von Anhalt-Zerbst, son of Heinrich I "der Fette" von Ballenstedt Fürst von Anhalt and Irmgard (?) von Thüringen, before 17 October 1259.^3,2,1,7

      ; Katharina, m.before 17.10.1259 Pr Siegfried von Anhalt.³

; Leo van de Pas cites: Nachkommen Gorms des Alten 1978. , S. Otto Brenner, Reference: 938a.⁴

     Siegfried I (?) Fürst von Anhalt-Zerbst was born in 1230.¹ He married Katarina/Catherine (?) of Sweden, daughter of Birger Magnusson (?) Jarl of Bjalbo, Regent of Sweden and Ingeborg Eriksdotter (?) of Sweden, before 17 October 1259.^7,2,8,3

Siegfried I (?) Fürst von Anhalt-Zerbst died after 25 March 1298.^1,2,3
     He was Prince of Anhalt-Zerbst.¹

; Siegfried I, Gf von Anhalt (1252-98), Gf von Aschersleben, 1253 in Köthen u.Dessau, +after 25.3.1298; m.before 17.10.1259 Katharina of Sweden.²

; Leo van de Pas cites: 1. Nachkommen Gorms des Alten 1978. , S. Otto Brenner, Reference: 938a
2. Stammtafeln zur Geschichte der Europäischen Staaten, 4 volumes, Marburg, 1953, 1975., W. K. Prinz von Isenburg, Reference: I 129.³ He was Fürst von Anhalt in Zerbst between 1252 and 1298.^2,3

     Bengt (?) Duke of Finland, Bishop of Linkoeping was born in 1254.⁴
Bengt (?) Duke of Finland, Bishop of Linkoeping died in 1291.^2,1
     He was Bishop of Linköping.^1,2 He was Duke of Finland.^2,1