Married 26 NOV 1248, Valladolid to , Violante of Aragon
Child 1: , Berenguela, Nun, b. BEF 6 DEC 1253
Child 2: , Beatriz of Castile, Infanta of Castile, b. DEC 1254
Child 3: de la Cerda, Fernando, Infant of Castile, b. AFT DEC 1255
Child 4: , Leonor, b. ABT 1256
Child 5: , Sancho IV the Fierce of Castile, King of Castile & León, b. 12 MAY 1258
Child 6: , Constanza, b. ABT 1259
Child 7: , Pedro of Castile, sn de Ledesma, b. BEF JUN 1261
Child 8: , Juan of Castile, Infant of Castile, b. BEF APR 1264
Child 9: , Isabel, b. ABT 1265
Child 10: , Violante, b. ABT 1266
Child 11: , Jaime (Juan) of Castile, sn de los Cameros, b. BEF 11 AUG 1268

Associated with de Guzman, Mayor Guillén
Child 12: Alfonso, Beatriz of Castile, b. 1242
Child 13: Fernández, Alfonso
Child 14: , Urraca
Child 15: , Martín