William IV De Percy
William IV De was born in Alnwick, Northumberland, England.  He died about July 28th, 1245.  He was buried about July 28th, 1245 in Sallay Abbey, Craven, Yorkshire, England.

 Joan De Briwere
Joan De was born about 1190 in Stoke, Devonshire, England.  She died about 1233.  She was buried before June 12th, 1233 in Hospital, Sandown, Surrey, England.

 Anastacia De Percy
Anastacia was born about 1216.