Robert de TREVERS
Robert de was born about 1065 in Burgh-by-Sands, Cumberland, England.  Robert de is no longer alive.

 Matilda le MESCHIN
Matilda le was born about 1069 in Bayeux, Calvados, Normandy, Fance.

 Ibria de TREVERS
Ibria de was born about 1085 in Burgh-by-Sands, Cumberland, England.