Master Jorge de Lencastre spent much of his career trying to defend the Order of Santiago against Manuel's encroachments. In May 1505, he actually managed to secure a royal order prohibiting knights from leaving his orders without his express permission. But Manuel soon obtained from Pope Alexander VI two bulls to undermine him - one from July 1505, giving the King of Portugal the right to dispose of the property of all three Orders; another in January, 1506, authorizing knights to move freely from other Orders to the Order of Christ.