Son of Egidio Boccanegra, former Admiral of the Castilian fleet, and nephew of Simon Boccanegra, 1st Doge of Genoa. Admiral of Castile at the service of Enrique II. Ambrosio Bocanegra Chronicle entries in which Ambrogio Boccanegra, Admiral of Castile appears: Crónica de D. Fernando, ch. 70: 59