 Hawkwood married Donnina , the illegitimate daughter of Bernabò Visconti , in 1377 . In that same year he defected to Florence . Hawkwood 's 1377 massacre at Cesena during the twilight of his papal employment in the War of the Eight Saints continues to tarnish his legacy . Thus , until 1377 , Hawkwood had principally served the Visconti of Milan and their allies in Pisa , Lucca , and Siena , usually against the interests of Florence , making him an ironic candidate for a monument in the Duomo of Florence . At the bidding of Pisa , Hawkwood attacked the Brunelleschi family 's Villa Petraia in Castello , burned Florentine subject territories around Incisa after defeating Florentine condottiero Ranuccio Farnese il Vecchio , and even taunted Florence from outside the city walls . 
