Hugh I De Grentmesnil
Hugh I was born about 1032 in Hinckley, , Lancaster, England.  Hugh I is no longer alive.

 Alice De Beaumont
Alice was born about 1037 in Hinckley, , Lancaster, England.  She died on July 11th, 1091.  She was buried in July 1091 in Bermondsey, , Surrey, England.

 Ivo De Grentmesnil
Ivo was born about 1062 in , , , Normandy.  He died in 1118.  He was buried in 1118.

 Rohese De Grentmesnil