Roger de Leyburne
Roger was born about 1215.  Roger is no longer alive.

 Idoine de Vipont
Idoine was born about 1228 in Brougham Castle, Westmoreland, England.

 William de Leyburne
William was born about 1242 in Leyburne, Kent, England.  He died on May 12th, 1309.