Will chart made in by Catarina da Costa, in which she ordered the foundation of an entail with a perpetual mass obligation of ten masses celebrated every year on the church of N. Sra. da Devesa, in Castelo de Vide, where her body should be buried. She appointed her niece Bárbara da Costa as first administrator of the entail during her lifetime. By the time of Bárbara's death, the institutor disposed that she could split the entailed assets in two parts, if she wished to, and bequeath each part to one of her children with the condition that they would order the perpetual celebration of five masses every year. From there on the succession should continue on the heir appointed by the last administrator. If Bárbara died without heirs, the administration would be handled to the closest relative.