Juan I of Castile and Léon, King of Castile and Léon - Pedigree | FamilyCentral
 Oct/Dec 1333 - 30 May 1379
 1310 - 1351
 5 May 1282 - Abt 1348
 3 Jan 1290 - 17 Nov 1313
 Abt 1245 - 23 Feb 1292
 1275 - Aft 1 Jun 1322
 12 May 1258 - 25 Apr 1295
 Aft 1260 - 1 Jul 1321
 9 Oct 1261 - 7 Jan 1325
 4 Jan 1271 - 4 Jul 1336
 5/19 Aug 1201 - 30 May 1252
 Abt 1202 - 5 Nov 1235
 1223 -
 4 Jan 1256 - 25 Jul 1275
 1253 - 17 Jun 1320