Ivo comté de Beaumont-sur-Oise

  Information about this person:

• Background Information. ²⁰¹
"The noble Hugh de Grantmesnil was in his youth distinguished for his valour, and married a very geautiful lady, Adeliza, daughter of Ivo, count de Beaumont, by whom he had Robert, William, Hugh, Ivo, and Aubrey; Adeline, Havise, Rohais, Matilda, and Agnes. This large and promising family was prey to various misfortunes, so that none of them except Robert lived to an old age."

The Ecclesiastical History of England and Normandy, Vol. II, p. 505

From footnote (2), p. 507, Ivo also had a son named Matthew, comté de Beaumont-sur-Oise, who was chamberlain of France in 1139, and died in 1151/2

Ivo married Judith.