Will made by Pedro Fernandes Subtil, in which he ordered, among other dispositions, the foundation of an entail composed of some houses in Marvão, inherited from his father with a perpetual obligation of four masses celebrated every year, to which he added some lands and an olive grove, increasing, henceforth, the perpetual mass obligation in sixteen masses celebrated every year as long as the world lasted, totalizing twenty masses every year. Over all these assets he imposed the clauses of perpetual indivisibility. To administrate this entail, he named his brother padre João Rodrigues Subtil, with the condition that he would appoint a successor with the same conditions.