Philippe of Dammartin was a 13th century noble woman. Philippe was the daughter of Simon of Dammartin, Count of Aumâle, Count of Ponthieu and of Montreuil and his wife Marie of Ponthieu. She was the sister of Joan, Countess of Ponthieu, 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...

 and mother of Eleanor of Castile

Eleanor of Castile

Eleanor of Castile was the first queen consort of Edward I of England. She was also Countess of Ponthieu in her own right from 1279 until her death in 1290, succeeding her mother and ruling together with her husband.-Birth:...

, the wife of Edward I of England

Edward I of England

Edward I , also known as Edward Longshanks and the Hammer of the Scots, was King of England from 1272 to 1307. The first son of Henry III, Edward was involved early in the political intrigues of his father's reign, which included an outright rebellion by the English barons...

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Philippe married three times.

1. Her first marriage was to Raoul II of Lusignan

Raoul II of Lusignan

Raoul II of Lusignan or Raoul II de Lusignan , was the son of Raoul I of Lusignan and his second wife, Alix d'Eu...

, Count of Eu in ca 1239/40. Philippe was his third wife. They had no children, but she was the step-mother of Marie de Lusignan

2. Her second marriage was to Raoul II, Lord of Coucy

Raoul II, Lord of Coucy

Raoul II, Lord of Coucy was a son of Enguerrand III and his wife Maria of Oisy. In 1246 he succeeded his father as lord of Coucy. Raoul died at the siege of El Mansoura in Egypt during the Seventh Crusade....

 in ca. 1246. They had one child:

• Enguerrand de Coucy, died young (before 1250)

3. Her third marriage was to Otto II, Count of Guelders

Otto II, Count of Guelders

Otto II, Count of Guelders was a nobleman from the 13th century. He was the son of Gerard III, Count of Guelders and Margaretha of Brabant.-Life:...

 between 1252 and 1254. They had four children:

• Reginald I, Count of Guelders
• Phillipa of Guelders, married Waleran II, Lord of Valkenburg.
• Margaret of Guelders, married Dietrich VI, Count of Cleves
  Dietrich VI, Count of Cleves
  Dietrich VI, also called Dietrich of Meissen, was Count of Cleves from 1260 through 1275.The County of Cleves was a comital polity of the Holy Roman Empire in present Germany and the Netherlands . Its rulers, called counts, had a special and privileged standing in the Empire...
  
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• Maria of Guelders