Sancho IV Ivrea of Castile, King of Castile, King of Toledo, King of León, King of Galicia, was born 12 May 1258 in Valladolid, Spain to Alfonso X of Castile (1221-1284) and Violant de Aragón (1236-1301) and died 25 April 1295 Toledo, Spain of unspecified causes. He married María de Molina (c1264-1321) 1281 JL in Toledo, Spain.
Children
| Name | Birth | Death | Joined with |
| Isabel of Castile (1283-1328) | 1283 Toro | 1328 | Jaime II of Aragon (1267-1327) Jean III de Bretagne (1286-1341) |
| Fernando IV of Castile (1285-1312) | 6 December 1285 Seville, Spain | 7 September 1312 Jaén, Spain | Constança of Portugal (1290-1313) |
| Alfonso of Castile (1286-1291) | |||
| Enrique of Castile (1288-1299) | |||
| Pedro of Castile (1290-1319) | |||
| Felipe of Castile (1292-1327) | |||
| Beatrix of Castile (1293-1359) | 8 March 1293 Toro, Zamora, Castile and León, Spain | 25 October 1359 Lisbon, Portugal | Afonso IV of Portugal (1291-1357) |
Footnotes (including sources)
| ‡ General |
|