William de Percy
William was born about 1193 in Alwick, Northumberland, England.  William is no longer alive.

 Ellen de Baliol
Ellen was born about 1200.  She died on November 22nd, 1281.

 Sir Henry De Percy
Sir Henry was born in 1235 in Alwick, Northumberland, England.  He died at the age of 37 on August 29th, 1272 in Sallay, England.