at the end of the 14th century king ferdinand i of portugal donated sacavém to his wife leonor telles de menezes. although the place belonged at that time thus to the sphere of influence of the queen-consort, it supported the later king john i of portugal in his struggle for power. therefore, after his triumph in 1385, sacavém was administratively included in lisbon, but donated to the major supporter of the new king, nuno álvares pereira. later, by the wedding of his daughter to the first duke of braganza, sacavém became a property of the powerful house of braganza.