Constanza Perez Princess of Castile and Léon, Duchess of Lancaster - Pedigree | FamilyCentral
 30 Aug 1334 - 22 Mar 1369
 Abt 1334 - Jul 1361
 1313 - 18 Jan 1357
 Abt 1282 - 1355
 Abt 1284 -
 3 Jan 1290 - 17 Nov 1313
 8 Feb 1291 - 28 May 1357
 12 May 1258 - 25 Apr 1295
 Aft 1260 - 1 Jul 1321
 9 Oct 1261 - 7 Jan 1325
 4 Jan 1271 - 4 Jul 1336
 9 Oct 1261 - 7 Jan 1325
 4 Jan 1271 - 4 Jul 1336
 12 May 1258 - 25 Apr 1295
 Aft 1260 - 1 Jul 1321
  Children