[Sidenote: Pipin patrician of the Romans, A.D. 754.] The Emperor Leo, born among the Isaurian mountains, where a purer faith may yet have lingered, and stung by the Mohammedan taunt of idolatry, determined to abolish the worship of images, which seemed fast obscuring the more spiritual part of Christianity. An attempt sufficient to cause tumults among the submissive Greeks, excited in Italy a fiercer commotion. The populace rose with one heart in defence of what had become to them more than a symbol: the exarch was slain: the Pope, though unwilling to sever himself from the lawful head and protector of the Church, must yet excommunicate the prince whom he could not reclaim from so hateful a heresy. Liudprand, king of the Lombards, improved his opportunity: falling on the exarchate as the champion of images, on Rome as the minister of the Greek Emperor, he overran the one, and all but succeeded in capturing the other. The Pope escaped for the moment, but saw his peril; placed between a heretic and a robber, he turned his gaze beyond the Alps, to a Catholic chief who had just achieved a signal deliverance for Christendom on the field of Poitiers. Gregory II had already opened communications with Charles Martel, mayor of the palace, and virtual ruler of the Frankish realm[42]. As the crisis becomes more pressing, Gregory III finds in the same quarter his only hope, and appeals to him, in urgent letters, to haste to the succour of Holy Church[43]. Some accounts add that Charles was offered, in the name of the Roman people, the office of consul and patrician. It is at least certain that here begins the connection of the old imperial seat with the rising German power: here first the pontiff leads a political movement, and shakes off the ties that bound him to his legitimate sovereign. Charles died before he could obey the call; but his son Pipin (surnamed the Short) made good use of the new friendship with Rome. He was the third of his family who had ruled the Franks with a monarch's full power: it seemed time to abolish the pageant of Merovingian royalty; yet a departure from the ancient line might shock the feelings of the people. A course was taken whose dangers no one then foresaw: the Holy See, now for the first time invoked as an international power, pronounced the deposition of Childeric, and gave to the royal office of his successor Pipin a sanctity hitherto unknown; adding to the old Frankish election, which consisted in raising the chief on a shield amid the clash of arms, the Roman diadem and the Hebrew rite of anointing. The compact between the chair of Peter and the Teutonic throne was hardly sealed, when the latter was summoned to discharge its share of the duties. Twice did Aistulf the Lombard assail Rome, twice did Pipin descend to the rescue: the second time at the bidding of a letter written in the name of St. Peter himself[44]. Aistulf could make no resistance; and the Frank bestowed