Collins's peerage of England; genealogical, biographical, and historical, Volume 4 by Arthur Collins, Sir Egerton Brydges
"Ivo, second son of William de Harcourt and Hue D'Amboise, inherited all his father's possessions in Englandl and by _____ his wife, was father of Robert de Harcourt, his successor; John de Harcourt; and Lucy, the wife of _______ Daunley."
|Offspring of Ivo de Harcourt and Agnes Unknown|
|Robert de Harcourt (c1152-1202)||1152 England||1202 England||Isabel de Camville (1153-c1202)|
|John de Harcourt|
|Lucy de Harcourt|