Alan "The Great Alan" de Percy , Sir
Alan "The Great Alan" de was born in 1069 in Percy-en-Auge, Calvados, Normandy, France.  He died before December 1135.

 Emma de Gand
Emma de was born about 1075 in Folkingham, Bourne, Lincolnshire, England.  She died in 1135.

 William de Percy , Lord of Topcliffe, Sir
William de was born in 1112 in Topcliffe, Yorkshire, England.  He died at the age of 62 in 1174 in Sallay, Craven, Yorkshire, England (dspml).

 Walter de Percy , of Wold Newton
Walter de was born about 1114 in Whitby, North Ride Yorkshire, England.  He died in Wold Newton, East Ride Yorkshire, England (dsp).