Enguerrand I, Count of Ponthieu
Enguerrand I was the son of Hugh I of Ponthieu and Gisela, daughter of Hugh Capet. Wikipedia
Spouse: Adelina of Holland (m. 1033)
Parents: Hugh I, Count of Ponthieu
Children: Hugh II, Count of Ponthieu
Great grandchildren: Agnes, Countess of Ponthieu, Arnould de Picquigny, Guermond de Picquigny, Vidame d'Amiens, and more
Grandchildren: Enguerrand II, Count of Ponthieu, Guy I, Count of Ponthieu, unknown de Ponthieu, and more