Joan, Countess of Ponthieu

Joan
Queen consort of Castile and León
Tenure1237–1252
Countess of Ponthieu
Reign1251–1279
PredecessorMarie
SuccessorEleanor
Countess of Aumale
Reign1239–1279
PredecessorSimon
SuccessorJohn I
Born1220
Died16 March 1279 (aged 58–59)
Abbeville, France
SpouseFerdinand III of Castile
Jean de Nesle, Seigneur de Falvy et de La Hérelle
Issue
Detail
Ferdinand II, Count of Aumale
Eleanor, Queen of England
HouseDammartin
FatherSimon, Count of Aumale
MotherMarie, Countess of Ponthieu

Joan of Dammartin (French: Jeanne; c. 1220 – 16 March 1279) was Queen of Castile and León by marriage to Ferdinand III of Castile. She also ruled as Countess of Ponthieu (1251–1279) and Aumale (1237–1279). Her daughter, the English queen Eleanor of Castile, was her successor in Ponthieu. Ferdinand II, Count of Aumale, her son and co-ruler in Aumale, predeceased her, thus she was succeeded by her grandson John I, Count of Aumale.