Simon, Count of Aumale

Simon of Dammartin (1180 – 21 September 1239) was a son of Alberic III of Dammartin (Aubry de Dammartin) and his wife Mathildis of Clermont, heiress to the county of Clermont and daughter of Renaud II, Count of Clermont.[1]

Simon of Dammartin, Count of Ponthieu
Died(1239-09-21)21 September 1239
Noble familyDammartin
Spouse(s)Marie, Countess of Ponthieu
FatherAlberic III of Dammartin
MotherMathildis 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.[2]


Simon married Marie, Countess of Ponthieu,[3] the daughter of William IV, Count of Ponthieu and Alys, Countess of the Vexin. Marie became Countess of Ponthieu in 1225.[4]

Simon and his wife Marie had four daughters:


  1. ^ Grant 2005, p. 239.
  2. ^ Baldwin 2000, p. ?.
  3. ^ Krause 2019, p. 128.
  4. ^ Krause 2019, p. 119.
  5. ^ a b Johnstone 1914, p. 436.
  6. ^ a b Pollock 2015, p. 146.
  7. ^ Pollock 2015, p. xv.


  • Baldwin, John W. (2000). Aristocratic Life in Medieval France: The Romances of Jean Renart and Gerbert de Montreuil, 1190-1230. Johns Hopkins University Press.
  • Grant, Lindy (2005). Architecture and society in Normandy 1120-1270. Yale University Press.
  • Krause, Kathy M. (2019). "From Mothers to Daughters:Literary Patronage as Political Work in Ponthieu". In Tanner, Heather J. (ed.). Medieval Elite Women and the Exercise of Power, 1100--1400: Moving Beyond the Exceptionalist Debate. Palgrave Macmillan.
  • Johnstone, Hilda (1914). "The County of Ponthieu, 1279-1307". The English Historical Review. Oxford University Press. 29 (115 July).
  • Pollock, M. A. (2015). Scotland, England and France After the Loss of Normandy, 1204-1296: "Auld Amitie". The Boydell Press.