At last, in February or March 773, Peter the papal messenger (having travelled by sea to Marseilles, as all the land routes were beset by Lombard soldiers) arrived at Theodo’s villa where Charles was holding his court. This is the place which the Neustrian citizens of the French Republic still call Thionville, while the Austrasian subjects of Kaiser Wilhelm, who have wrested it from the Neustrians, speak of it as Diedenhofen. It is now a strong border fortress on the Moselle, sixteen miles north of Metz. Hither, then, came the papal messenger to utter his master’s piteous cry for help. Probably the ambassadors of Desiderius appeared there also to deny the charges brought against him, or to declare that whatever he had forcibly taken from the papal see he had already surrendered. Charles resolved on war if war was needful, but, even as his father Pippin had done, he tried diplomacy first. Three messengers, a bishop, an abbot, and a courtier, were sent to Italy to inquire into the rights of the quarrel, and on their return and report that the cities violently taken from St. Peter were not restored, Charles, still treading in his father’s footsteps, sent one more embassy to Desiderius, offering the Lombard 14,000 golden solidi (£8000) if he would restore the conquered cities, and fully satisfy all the Papal demands. The offer was refused, and Charles having summoned the Frankish host to his standard, set forward for Italy. According to a plan which he frequently adopted, and one reason for which was probably the desire to lessen the difficulties of commissariat, Charles, after mustering his troops at Geneva, divided his host into two parts--one of which under his uncle Bernard was to cross by the Great St. Bernard and to descend upon Aosta, while the other which he himself commanded, crossing the Mont Cenis, was to take the road to Susa. Both divisions, as in his father’s time, traversed the highest points of their respective passes without hindrance, but when Charles descended into the long and narrow valley of the Dora Susa, he found his further progress barred by the fortifications and the army of Desiderius. He renewed his offers of a money payment in return for the papal cities, he even expressed his willingness to be satisfied with a mere promise to surrender those cities, if three Lombard nobles were handed over to him as hostages; but all was in vain. Strong in the impregnability of his fortifications Desiderius refused every offer of accommodation, until a sudden panic seized his host, the fortresses were abandoned, and again, as in Pippin’s time, all the Lombard army retreated down the valley and shut itself up behind the walls of Pavia.