Marie of Ponthieu was the Countess of Ponthieu

Ponthieu

Ponthieu was one of six feudal counties that eventually merged together to become part of the Province of Picardy, in northern France. Its chief town is Abbeville.- History :...

 and Countess of Montreuil, ruling from 1221 to 1251.

Biography

Marie was the daughter of William IV of Ponthieu

William IV of Ponthieu

William III Talvas was William III, Count of Ponthieu and William IV . He was Count of Ponthieu, ruler of a small province in northern France that fell under the suzerainty of the dukes of Normandy since at least the mid 11th century...

 and Alys, Countess of the Vexin

Alys, Countess of the Vexin

Alys, Countess of the Vexin was the daughter of King Louis VII of France and his second wife Constance of Castile.- Life :...

, and granddaughter of King Louis VII of France

Louis VII of France

Louis VII was King of France, the son and successor of Louis VI . He ruled from 1137 until his death. He was a member of the House of Capet. His reign was dominated by feudal struggles , and saw the beginning of the long rivalry between France and England...

 by his second wife Constance of Castile. As her father's only surviving child, Marie succeeded him, ruling as Countess of Ponthieu

Ponthieu

Ponthieu was one of six feudal counties that eventually merged together to become part of the Province of Picardy, in northern France. Its chief town is Abbeville.- History :...

 and Montreuil from 1221 to 1251.

Marriages and children

She married Simon of Dammartin

Simon of Dammartin

Simon of Dammartin was a son of Alberic II of Dammartin and his wife Mathildis of Clermont.-Biography:...

 before September 1208. He was the son of Alberic II of Dammartin

Alberic II of Dammartin

Alberic II of Dammartin was a French count.He married Marie, heiress to the county of Clermont. They had three children:* Renaud I, Count of Dammartin Alberic II of Dammartin (Aubry de Dammartin) (died 1200 AD) was a French count.He married Marie, heiress to the county of Clermont. They had three...

 and Maud de Clermont, daughter of Renaud de Clermont, Count de Clermont-en-Beauvaisis and Clemence de Bar. Simon and Marie had four daughters but only two are recorded. The eldest was
Joan of Dammartin (1220- 16 March 1279), second wife of Ferdinand III of Castile

Ferdinand III of Castile

Saint Ferdinand III, T.O.S.F., was the King of Castile from 1217 and León from 1230. He was the son of Alfonso IX of León and Berenguela of Castile. Through his second marriage he was also Count of Aumale. He finished the work done by his maternal grandfather Alfonso VIII and consolidated the...

. The other daughter was Philippa of Dammartin (died 1277/81) who married firstly Raoul II d' Issoudun, secondly Raoul II de Coucy, and thirdly Otto II, Count Geldern.

Marie married secondly sometime between September 1240 and 15 December 1241, Mathieu de Montmorency, Seigneur d'Attichy, who was killed in battle at Mansurrah on 8 February 1250 during the Seventh Crusade

Seventh Crusade

The Seventh Crusade was a crusade led by Louis IX of France from 1248 to 1254. Approximately 800,000 bezants were paid in ransom for King Louis who, along with thousands of his troops, was captured and defeated by the Egyptian army led by the Ayyubid Sultan Turanshah supported by the Bahariyya...

, led by King Louis IX of France

Louis IX of France

Louis IX , commonly Saint Louis, was King of France from 1226 until his death. He was also styled Louis II, Count of Artois from 1226 to 1237. Born at Poissy, near Paris, he was an eighth-generation descendant of Hugh Capet, and thus a member of the House of Capet, and the son of Louis VIII and...

.

Ancestry