Entail foundation deed by D. Gil Eanes da Costa and D. Joana da Silva, his wife. They entail their third parts and appoint D. António, their eldest male son, first administrator, to be succeded by his brothers in order of birth, and only afterwards by D. António's children. The institutors and successors would be buried in the chancel of the convent of Almoster, as stated in a contract signed with the abbess and convent. They appoint the administrator of the entail patron of that chapel. The obligation of the institution of the entail was included in the marriage contract of the institutors.