Nielsen Hayden genealogy
Fernando II, King of Leon, Galicia, and Extremadura

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- 1 Fernando II, King of Leon, Galicia, and Extremadura [1] b. 1137 d. 22 Jan 1188
Urraca of Portugal b. Abt 1150 d. 16 Oct 1188
- 2 Alfonso IX, King of León and Galicia [1.1]
b. 15 Aug 1171 d. 24 Sep 1230
- + Aldonza Martinez da Silva
Berenguela I of Castile, Queen Of Castile & Toledo b. Abt 1180 d. 8 Nov 1246
- 3 Bérenguère of Castile-León [1.1.1]
b. Abt 1199 d. 12 Apr 1237
Jeane de Brienne, King of Jerusalem; Latin Emperor of Constantinople b. Abt 1175 d. 23 Mar 1237
- 4 Jean de Brienne [1.1.1.1]
d. 8 Jan 1296 [ =>]
- 4 Louis de Brienne [1.1.1.2]
[ =>]
- 4 Jean de Brienne [1.1.1.1]
- 3 St. Fernando III, King Of Castile, León, Galicia, Toledo, Córdoba, Jaén, and Seville [1.1.2]
b. Between Jun 1201 and Jul 1201 d. 30 May 1252
Elizabeth von Hohenstaufen b. Between Mar 1205 and May 1205 d. 30 Nov 1235
- 4 Alfonso X, King of Castile and León [1.1.2.1]
b. 21 Nov 1221 d. 4 Apr 1284 [ =>]
- 4 Alfonso X, King of Castile and León [1.1.2.1]
Jeanne de Dammartin b. Abt 1220 d. 15 Mar 1279
- 4 Eleanor of Castile, Queen Consort of England [1.1.2.2]
b. 1240 d. 28 Nov 1290 [ =>]
- 4 Eleanor of Castile, Queen Consort of England [1.1.2.2]
- 3 Alfonso [1.1.3]
b. Between 1203 and 1204 d. 6 Jan 1272
Mayor Afonso de Meneses
- 4 Maria de Molina [1.1.3.1]
b. Abt 1262 d. 17 Jul 1321 [ =>]
- 4 Maria de Molina [1.1.3.1]
- 3 Bérenguère of Castile-León [1.1.1]
- + Aldonza Martinez da Silva
- 2 Alfonso IX, King of León and Galicia [1.1]