Hugh De Mortimer
Hugh was born in 1271 in Richard's Castle, Herefordshire, England.  He died at the age of 33 on July 20th, 1304.

 Matilda de Hereford
Matilda was born about 1273 in Hereford, Herefordshire, England.  Matilda is no longer alive.

 Joan de Mortimer
Joan was born in 1291 in Richards Castle, Herefordshire, England.

 Margaret De Mortimer
Margaret was born on September 14th, 1295 in Richards Castle, Hertfordshire, England.  She died at the age of 50 in 1345.