Simon Demmartin, Count of Ponthieu

Male 1180 - 1239  (~ 59 years)


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  • Name Simon Demmartin 
    Suffix Count of Ponthieu 
    Born ca 1180 
    Gender Male 
    Died 21 Sep 1239 
    Buried Abbey of Valloires, Picardie, France Find all individuals with events at this location 
    Notes 
    • Wikipedia
      https://en.wikipedia.org/wiki/Simon,_Count_of_Ponthieu

      He was a son of Alberic II of Dammartin (Aubry de Dammartin) and his wife Mathildis of Clermont.

      Simon was the brother of Renaud I, Count of Dammartin, who had abducted the heiress of Boulogne, and forced her to marry him. It is thought that in order to strengthen the alliance with the Dammartins, King Philip Augustus of France allowed Simon to marry Marie, Countess of Ponthieu, who was a niece of the king, in 1208. Renaud and Simon of Dammartin would eventually ally themselves with John, King of England. In 1214 the brothers stood against Philip Augustus in the Battle of Bouvines. The French won the battle, and Renaud was imprisoned, while Simon was exiled.

      Marie's father William IV, Count of Ponthieu had remained loyal to Philip Augustus. When William died in 1221, Philip Augustus denied Marie her inheritance and gave Ponthieu in custody to his cousin Robert III, Count of Dreux. After the death of Philip Augustus, Marie was able to negotiate an agreement with his successor Louis VIII in 1225. Ponthieu was held by the king, and Simon would only be allowed to enter this or any other fief if he obtained royal permission. In 1231 Simon agreed to the terms and added that he would not enter into marriage negotiations for his daughters without consent of the king.

      Simon married Marie, Countess of Ponthieu,the daughter of William IV, Count of Ponthieu and Alys, Countess of the Vexin. Marie became Countess of Ponthieu in 1221.

      Simon and his wife Marie had four daughters:

      1. Joan, Countess of Ponthieu (1220-1278), married a) Ferdinand III of Castile. Mother of Eleanor of Castile, the wife of Edward I of England. Married b) Jean de Nesle, Seigneur de Falvy et de La Hérelle.

      2. Mathilda of Dammartin (-1279), married John of Châtellerault

      3. Philippa of Dammartin (-1280), married a) Raoul II of Lusignan, b) Raoul II, Lord of Coucy, c) Otto II, Count of Guelders.

      4. Maria of Dammartin, married John II, Count of Roucy.


    Person ID I36060  Master File
    Last Modified 9 Sep 2016 

    Family Marie of Ponthieu, Countess of Ponthieu,   b. 17 Apr 1199, Abbeville, Picardie, France Find all individuals with events at this location,   d. 21 Sep 1250, Abbeville, Picardie, France Find all individuals with events at this location  (Age 51 years) 
    Children 
     1. Jeanne (Joan) of Dammartin, Countess of Ponthieu,   b. ca 1220, Abbeville, Picardie, France Find all individuals with events at this location,   d. 16 Mar 1279, Abbeville, Picardie, France Find all individuals with events at this location  (Age ~ 59 years)
    Last Modified 9 Sep 2016 
    Family ID F14863  Group Sheet  |  Family Chart