Also in 1639, Pope Urban VIII asked Lascaris to intervene in the First War of Castro by sending naval forces owned by the order to assist papal troops against the Dukes of Parma; specifically galleons and other warships. But the Dukes of Parma, as well as the Duchy of Venice, the Duchy of Florence and Duchy of Modena (who were allied with them), appealed to Lascaris not to provide the pope with support.