Agnes, Countess of Ponthieu

Agnes of Ponthieu was ruling Countess of Ponthieu from 1100.
She was the daughter of Count Guy I of Ponthieu and Adela. Enguerrand, her brother, died at a youthful age. Her father, Guy, then made her uncle Hugh heir presumptive, but he also died before Guy. Agnes became count Guy's heiress, and was married to Robert of [Bellême, 3rd Earl of Shrewsbury|Robert of Bellême]. Their son William [III of Ponthieu] succeeded to the county of Ponthieu after the death of Agnes, and the imprisonment of his father in 1112.