#4 Alan - 2nd Baron - de Percy
 
#3 William - 3rd Baron - de Percy
Born - 1121

  #4 Emma of Gaunt
 

#2 William de Percy
Born - 1112
 
#3 Alice de Ros
   
             #1 Agnes De Percy - Baroness of de Percy
             Born - Bet. 1193 - 1202

   

#2 Adelisa of Turnbridge