Sir William de Valence
Sir William was born in 1225 in Valence, France.  He died at the age of 71 on May 18th, 1296.

 Joan de Munchensy
Joan was born about 1222 in Pembrokeshire, Wales.  She died before 1307.

 Isabel de Valence
Isabel was born in 1266 in Pembroke, Cork, Ireland.  She died at the age of 39 on October 3rd, 1305.