John I, Count of Ponthieu explained

John I, Count of Ponthieu
Noble Family:	House of Bellême
Father:	Guy II of Ponthieu
Mother:	Ida
Spouse:	Beatrice of Saint-Pol
Death Date:	1191

John I of Ponthieu (– 1191) was the son of Guy II of Ponthieu and Ida. He succeeded his father as Count of Ponthieu in 1147.

War with Normandy

John attacked Normandy in 1166 and 1168, in response to King Henry II of England's confiscation of the castles at Alençon, La Roche-Mabile and the Alenconnais. Henry, angry with John's rebellion, led his army on a path of destruction across Vimeu, the south-west part of Ponthieu.

Family

John married Beatrice of Saint-Pol, they had:

• William IV Talvas
• Margaret, married a Pecquigny

Sources

• Book: Holt, James Clarke . Magna Carta and Medieval Government . Hambledon Press . 1985 .
• Book: Parsons, John Carmi . The Court and Household of Eleanor of Castile in 1290 . Pontifical Institute of Mediaeval Studies . 1977 .
• Book: Power, Daniel . The Norman Frontier in the Twelfth and Early Thirteenth Centuries . Cambridge University Press . 2004 .
• Book: Power, Daniel . The Preparations of Count John I of Sees for the Third Crusade . Crusading and Warfare in the Middle Ages . Nicholas . Morton . Simon . John . Ashgate Publishing Limited . 2014 .
• Book: Tanner, Heather . Families, Friends and Allies: Boulogne and Politics in Northern France and England, c.879-1160 . Brill . 2004 .