 He was a member of the triumvirates that governed the colony for several short periods between 1524 and 1528, in the absence of Cortés.There is considerable evidence indicating that Alonso was the illegitimate son of King Ferdinand II of Aragon.King Ferdinand had a brief romantic liaison with Luisa de Estrada when they were both 17, before marrying Queen Isabella I of Castille in 1469 (while Luisa de Estrada was pregnant with Alonso).