 He was a son of "don" Juan Chacón and wife "dona" Luisa Fajardo y Manrique de Lara, 2nd Countess and Lady of Cartagena.He was the 3rd Count and Lord of the City of Cartagena and the 7th Lord of Alhama, Mula, Lebrillo, Molina Seca, La Puebla, etc.He was "Adelantado-Mayor" and Captain-General of the Kingdom of Murcia, Commander of Caravaca and "Thirteen" ("Trece") of the Order of Santiago, of the Council of the Catholic Monarchs Ferdinand V of Castile and Isabel I of Castile.