 They exchanged some of their captives for Alonso, who told them about the massacre of the mission brothers.Floridian Jesuit Missionary Father Juan Rogel wrote an account to his superior Francis Borgia, dated August 28, 1572.That month, Floridian Governor Pedro Menéndez de Avilés arrived with armed forces from Florida to avenge the massacre of the Spanish and hoping to capture Don Luis.