*Isabella de Mortimer
born about 1248 Wigmore, Herefordshire, England
died before 10 August 1274

father:
*Roger de Mortimer
born 1221 Cwmaron Castle, Radnorshire, Wales
died 27 October 1282 Kingsland, Herefordshire, England

mother:
*Maud de Braose
born Gower, Glamorganshire, Wales
died before 20 March 1301
married about 1247

siblings:
*Edmund de Mortimer born 1252 Wigmore, Herefordshire, England christened 1304
died 17 July 1304 Wigmore, Herefordshire, England buried Wigmore, Herefordshire, England
Margaret de Mortimer born about 1269 Wigmore, Herefordshire, England
Ralph de Mortimer born about 1250 Wigmore, Herefordshire, England died before 10 August 1274
Geoffrey de Mortimer born about 1254 Wigmore, Herefordshire, England
Roger de Mortimer born about 1256 Wigmore, Herefordshire, England died about 3 August 1326
William de Mortimer born about 1258 Wigmore, Herefordshire, England died 1297

spouse:
*John Fitzalan
born: 14 September 1246 Arundel, Sussex, England
died 18 March 1272
married 1260

children:
Amy Fitzalan born about 1273 Arundel, Sussex, England
*Richard Fitzalan born 3 February 1267 Arundel, Sussex, England died 9 March 1302
Maud Fitzalan born about 1263 Arundel, Sussex, England
John Fitzalan born about 1271 Arundel, Sussex, England
*Eleanor Fitzalan (Arundel) born about 1277 Arundel, Sussex, England died July 1328

biographical and/or anecdotal:

notes or source:
LDS
ancestry.com