of Rome. This was the beginning of the Papal States. In the meantime, Leo sent Eutychius, as Exarch of Ravenna, to take control of Italy. When Eutychius arrived at Naples, he made an agreement whereby Liutprand would attack the Pope if the Greeks aided him in subjugating the contumacious and independent southern Lombard duchies, the Duchy of Spoleto and the Duchy of Benevento. The dukes, Thrasimund II and Godescalc, surrendered — though control of the duchies from Pavia was not to endure for long — and the new exarch marched on Rome. At Rome, Liutprand camped on the far bank of the Tiber in the "Field of Nero" and arbitrated, returning to the exarch the city of Ravenna alone among the Byzantine territories and prevailing on the pope to restore his allegiance to the emperor (730). Frankish relations Following the death of Theodo, Liutprand turned from his former Agilolfing allies to bind himself to Charles Martel, duke of the Franks, whose son, Pepin the Short, he adopted and girded with arms at his coming of manhood. In 733 Liutprand promulgated the Notitia de actoribus regis, a series of six laws, presaging the later Frankish capitulary in structure. They sought to curb the usurpation by local administrators of public lands. In 735–736, a serious illness encouraged Liutprand to raise his nephew Hildeprand to co-kingship. In 736–737, Liutprand crossed the Alps with an army to help Charles expel the Moors from Aix-en-Provence and Arles. In 738, a long peace was broken by the rebellious Lombard duke of Spoleto, Thrasimund II. When the revolt was suppressed, with nephews of Liutprand established at Beneventum and Spoleto, the dukes fled to Rome and the protection of Pope Gregory III. Liutprand immediately began the conquest of the Ducatus Romanus, the province around Rome. After capturing Orte and Bomarzo, he arrived at Rome and besieged it. The Pope sent an embassy to Charles Martel to beg for aid, promising favour then and in the future world: the cover letter survives. Gregory conferred on him the title of patrician. Gregory's anti-Lombard rhetoric reached absurd heights considering Liutprand's orthodoxy; the Lombard king only wanted his rebellious dukes to face justice. Charles ignored the pope's excessive charges against his erstwhile ally and instead sent back his own embassy to mediate between the two Italian powers. Before any headway was made, however, both pope and Frank died. Liutprandi leges With Rothari,