reggio accepted the vicars of emperor henry vii and louis the bavarian, and was subject to the pope under cardinal bertrand du poyet (1322). later (1331), john of bohemia, who recognized the suzerainty of the pope over reggio as well as over parma and modena, was made lord of the city, but sold it to the fogliani, from whom it passed to the gonzaga of mantua (1335), who sold it to galeazzo ii visconti of milan. in 1409 it returned again to the house of este of the line of modena, until 1859. the popes, however, always claimed to be its suzerains. after the ferrara war, reggio spontaneously submitted to pope julius ii (1512–15). by the peace of barcelona (1529), emperor charles v bound himself to give back reggio to the popes, but he did not do so.