d'Oilly le Sire D'Ouillie
d'Oilly le Sire was born before 1025.  He died after 1040.

 Nigel d'Oilly
Nigel was born in 1040 in Ouilley-Le-Vicomte, Calvados, France.  He died at the age of 75 in 1115.

 Robert d'Oilly
Robert was born about 1040.  He died after 1085.