Alfonso VII of León and Castile
On the strength of his fame as crusader, Caffaro became a captain in the Genoese navy, and fought in several battles against the Republic of Pisa and other Mediterranean powers. Toward the end of his life he became a diplomat, and carried out several diplomatic missions on behalf of Genoa to the courts of Pope Callixtus II, the Emperor Frederick I and King Alfonso VII of León and Castile, and also to Pisa.