Leonor I De Castilla 
Leonor I De was born before 1373. Leonor I De's father is Sancho De Castilla and her mother is Nm1 X. Her paternal grandparents were Afonso XI De+ Castilla and Eleonore De Guzman. She had a half-sister named Leonor II De.General Notes
SOURCES: "Ancestors/Descendants of Royal Lines" (Contributors: Reynaud de Paysac, H.R. Moser <Burke Peerage>), O.Guionneau, E. Polti, A.Terlinden <Genealogy of the existing British Peerage, 1842, and E. Lodge>) http://www.geneastar.org.
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Ancestor Pedigree Chart
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*There are earlier generations for the ancestor(s) indicated. See their page(s) for details (click name)
- b.1221 d.1284
- b.12 May 1258 in Seville, Spain d.25 Apr 1295 in Toledo, Spain
- b.> 1235 d.1300
- b.1285 d.1312
- b.BET 1203 AND 1204 in Leon, Spain d.06 Jan 1272 in Salamanca, Spain
- b.> 1260 in Molina, Guadalajara, Spain d.01 Jul 1321 in Valladolid, Spain
- b.> 1230 in Montealegre, Valladolid, Spain
- b.1311 d.27 Mar 1350 in Gibralter
- b.10 May 1210 in Coimbra d.16 Feb 1279 in Lisbon, Spain
- b.09 Oct 1261 d.07 Jan 1325
- b.1242 d.1313
- b.1290 d.1313
- b.~ 1239 in Barcelona, Aragon d.02 Nov 1285 in Villafranca Del Panades, Barcelona, Aragon
- b.1271 in Barcelona, Spain d.04 Aug 1336 in Estremoz
- b.1249 in Catania, Italy d.1302 in Barcelona, Aragon
- b.1339
- b.~ 1230
- b.~ 1255
- b.~ 1230
- b.~ 1280
- b.~ 1255
- b.1310 d.1351
- b.~ 1200
- b.~ 1245 d.1292
- b.~ 1215 d.1266
- b.~ 1285
- b.~ 1255
- b.< 1373
- b.~ 1345
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They had a daughter named Leonor De.