Gilbert (The Marshall) Fitz Robert
Gilbert (The Marshall) was born about 1075 in Somersetshire, Eng.  He died about 1130.

 Unknown de Venuz
Unknown was born in Pembroke, Wales.  Unknown is no longer alive.

 John (The Marshall) Fitz Gilbert   
John (The Marshall) was born about 1195 in Pembroke, Wales.  He died in 1164.