17th century." ^ a b Martín de la Ascensión to Doctor Morga, 28 January 1597, in The Philippine Islands, 1493–1803, ed. Blair and Robertson, vol. 15, p
Blair and Robertson, vol. 9, p. 51-54 ^ a b Martín de la Ascensión to Doctor Morga, 28 January 1597, in The Philippine Islands, 1493–1803, ed. Blair and