Will made by Maria de Chaves in which she ordered, among other dispositions, the foundation of an entail composed of 4 alqueires of land in Arrifes, S. Miguel island, with a perpetual mass obligation of ten masses celebrated every year. She named her nephew Martinho da Costa as first administrator of the entail and after his death the succession should continue on the eldest male heir, just as the entail founded by her uncle Francisco Afonso de Chaves. Besides of the land, she also entailed a golden necklace that belonged to her grandmother Margarida de Chaves, in order to perpetuate her memory on the future generations. She also appointed her nephew Martinho da Costa on the administration of the entail founded by her uncle Francisco Afonso de Chaves, on the occasion of her marriage.