Gerhard I Graf von Holstein-Itzehoe 
He gained the title of Graf von Holstein-Itzehoe.
Children of Gerhard I Graf von Holstein-Itzehoe and Elisabeth von Mecklenburg
- Elisabeth von Holstein-Itzehoe+
- Albrecht von Holstein-Itzehoe d. bt 1272 – 1281
- Bruno von Schauenburg
- Otto von Schauenburg
- Mechtilde von Schauenburg
- Hedwig von Holstein+2 d. c 1325
- Luitgarde von Holstein-Itzehoe+ b. c 1251, d. 28 Feb 1289
- Johann von Schauenburg b. 1253, d. b 1272
- Gerhard II von Schauenburg Graf von Holstein-Plön+ b. 1254, d. 1312
- Adolf VI Graf von Holstein-Schauenburg+ b. 1256, d. 1315
- Heinrich I Graf von Holstein-Rendsburg+ b. 1258, d. 1304
- [S3268] Hans Harmsen, “re: Chester Family,” e-mail message to BENR, 21 August 2008. Hereinafter cited as “re: Chester Family.”
- [S16] Jirí Louda and Michael MacLagan, Lines of Succession: Heraldry of the Royal Families of Europe, 2nd edition (London, U.K.: Little, Brown and Company, 1999), table 18. Hereinafter cited as Lines of Succession.
Magnus Folkunga1 
Erik Folkunga, Duke of Södermanland1 
He gained the title of Duke of Södermanland.1
Children of Erik Folkunga, Duke of Södermanland and Ingeborg Haakonsdottir, Princess of Norway
- Eufemia of Sweden+ d. 1370
- Magnus VII (II), King of Norway and Sweden+ b. 1316, d. 1374
- Euphemia Folkunga+1 b. 1317, d. c 1370
Ingeborg Haakonsdottir, Princess of Norway1 
Children of Ingeborg Haakonsdottir, Princess of Norway and Erik Folkunga, Duke of Södermanland
- Eufemia of Sweden+ d. 1370
- Magnus VII (II), King of Norway and Sweden+3 b. 1316, d. 1374
- Euphemia Folkunga+1 b. 1317, d. c 1370
- [S16] Jirí Louda and Michael MacLagan, Lines of Succession: Heraldry of the Royal Families of Europe, 2nd edition (London, U.K.: Little, Brown and Company, 1999), table 18. Hereinafter cited as Lines of Succession.
- [S16] Louda and MacLagan, Lines of Succession, table 24.
- [S38] John Morby, Dynasties of the World: a chronological and genealogical handbook (Oxford, Oxfordshire, U.K.: Oxford University Press, 1989), page 147. Hereinafter cited as Dynasties of the World.
Haakon V Magnusson, King of Norway1 
Haakon V Magnusson, King of Norway also went by the nick-name of Haakon ‘Longlegs’.3 He succeeded as the King Haakon V of Norway in 1299.2
Child of Haakon V Magnusson, King of Norway
- Agnes Haakonsdatter b. c 1290, d. 1319
Child of Haakon V Magnusson, King of Norway and Euphemia von Rügen
- Ingeborg Haakonsdottir, Princess of Norway+1 b. 1301, d. a 1360
- [S16] Jirí Louda and Michael MacLagan, Lines of Succession: Heraldry of the Royal Families of Europe, 2nd edition (London, U.K.: Little, Brown and Company, 1999), table 18. Hereinafter cited as Lines of Succession.
- [S16] Louda and MacLagan, Lines of Succession, table 24.
- [S38] John Morby, Dynasties of the World: a chronological and genealogical handbook (Oxford, Oxfordshire, U.K.: Oxford University Press, 1989), page 147. Hereinafter cited as Dynasties of the World.
Euphemia von Rügen1 
Child of Euphemia von Rügen and Haakon V Magnusson, King of Norway
- Ingeborg Haakonsdottir, Princess of Norway+1 b. 1301, d. a 1360
- [S16] Jirí Louda and Michael MacLagan, Lines of Succession: Heraldry of the Royal Families of Europe, 2nd edition (London, U.K.: Little, Brown and Company, 1999), table 18. Hereinafter cited as Lines of Succession.
Wizlaw II Herzog von Rügen1 
He gained the title of Herzog von Rügen.1
Children of Wizlaw II Herzog von Rügen and Agnes von Braunschweig-Lüneburg
- Margaret von Rügen+ d. c 1315
- Wizlaw III Prinz von Rügen+ d. 1325
- Jaromar von Rügen d. bt 1293 – 1294
- Sambor Prinz von Rügen d. 1304
- Swentopolk von Rügen d. a 1285
- Helene von Rügen+ d. 1315
- Sophie von Rügen d. a 1302
- Euphemia von Rügen+1 d. 1312
- [S16] Jirí Louda and Michael MacLagan, Lines of Succession: Heraldry of the Royal Families of Europe, 2nd edition (London, U.K.: Little, Brown and Company, 1999), table 18. Hereinafter cited as Lines of Succession.
Euphemia Folkunga1 
Children of Euphemia Folkunga and Albrecht I Herzog von Mecklenburg
- Heinrich I Herzog von Mecklenburg-Schwerin+1 d. 1383
- Magnus Herzog von Mecklenburg+2 d. 1384
- Albrecht von Mecklenburg, King of Sweden+1 b. c 1340, d. 31 Mar 1412
Albrecht I Herzog von Mecklenburg 
He gained the title of Herzog von Mecklenburg.1
Child of Albrecht I Herzog von Mecklenburg and Eufemia of Sweden
- Ingeburg von Mecklenburg+ d. a 1395
Children of Albrecht I Herzog von Mecklenburg and Euphemia Folkunga
- Heinrich I Herzog von Mecklenburg-Schwerin+1 d. 1383
- Magnus Herzog von Mecklenburg+2 d. 1384
- Albrecht von Mecklenburg, King of Sweden+1 b. c 1340, d. 31 Mar 1412
Child of Albrecht I Herzog von Mecklenburg
- Anne von Mecklenburg b. b 1379
Mechtild von Werle-Waren1
- [S16] Jirí Louda and Michael MacLagan, Lines of Succession: Heraldry of the Royal Families of Europe, 2nd edition (London, U.K.: Little, Brown and Company, 1999), table 18. Hereinafter cited as Lines of Succession.
