 In 879, Carloman donated land to the monastery of Santa Cristina by the royal palace at Olona.Although the monastery was reportedly built during the eighth century, the first record of its dedication to Cristina is found in Carloman's charter.In a letter of 7 June 879, Pope John, having failed to convince Louis the Stammerer, Charles the Bald's heir, to come to Italy for its defence, appealed to Carloman, whom he had previously rejected.