DOCUMENTS OF MARY OF CAYEUX CONCERNING GRANTS TO THE ABBEY OF DOMMARTIN AND AN AGREEMENT WITH THE KING OF ENGLAND
DOCUMENTS OF MARY OF CAYEUX CONCERNING GRANTS TO THE ABBEY OF DOMMARTIN AND AN AGREEMENT WITH THE KING OF ENGLAND

Summary/Abstract: Following up on recent research about Mary of Cayeux, sister of Queen Helen of Serbia, the paper examines the documents issued by Mary and her son Anselm during their stay in Picardy, the family’s region of origin, in the second half of the 1270s. It is established that one of the five documents previously ascribed to them is not theirs, but also that there are four other previously unknown or unused documents issued by them or on their behalf, bringing the total to eight. Seven of these date from 1276–1277 and deal with grants made by the family to the Abbey of Dommartin (Saint Josse au Bois) in the County of Ponthieu, while one from September 1279 concerns an agreement with King Edward I and Queen Eleanor of England, who had inherited the county earlier that year. The paper offers the first full text edition of all eight documents and discusses the information provided by them about Mary and her family.

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