William II , Chatelain de St. Omer St. Omer

William II , Chatelain de St. Omer's father was William I Chatelain de St. Omer and his mother was Aganitrude Von Brugge.  His paternal grandfather was Baldwin De St. Omer.  He was an only child.  He died in 1148.

They had a son and a daughter, named William III , Chatelain de St. Omer and Maude.