Among those who were deposed, the most important, from his position and influence, was Robert Stigand, Archbishop of Canterbury. The difficulty of finding a proper successor to Stigand was not overlooked. Without delay, the legates prepared to bestow the archbishopric of Canterbury on Lanfranc of Pavia, one of the greatest scholars and most remarkable men of the century in which he lived.
Lanfranc was a native of the city of Pavia, and a man of gentle blood. A scholar by nature, he early applied himself to those studies which enabled him to figure as the leader of the intellectual movement of the age. It has been said that, "to comprehend the extent of his talents, one must be Herodian in grammar, Aristotle in dialectics, Cicero in rhetoric, Augustine and Jerome in scriptural lore."
Becoming a monk of Bec-Hellouin, Lanfranc rapidly raised that humble monastery to the dignity of a university, and came to be acknowledged as the great teacher of Latin Christendom. So signal was his success, and so high his reputation, that, from the remotest parts of Western Europe, and even from Greece, students resorted to Bec-Hellouin as to a new Athens.
While at Bec-Hellouin, Lanfranc had the gratification to gain the confidence of William the Norman, and he became zealously attached to the ambitious duke's fortunes. But a serious difference arose. Lanfranc happened to set himself in opposition to William's marriage with Matilda of Flanders, as being within the degrees of relationship prohibited by the Church; and as, in regard to this affair, the duke would brook no contradiction, the priest of Pavia was commanded to depart. It is related that William, to speed Lanfranc on his way back to his native land, sent him a horse so lame of one foot, that it might be said to go on three legs, and that Lanfranc, meeting William on the road, begged at least to have a quadruped, and not a tripod, for his journey. But however that may have been, Lanfranc found his way to Rome, and placed himself under the wing of the Pope.
Once at Rome, Lanfranc began carefully to examine the case of William's relationship to Matilda in all its bearings. Ere long, his opinion as to its merits underwent a change. After examining canon and precedent, he arrived at the conclusion that, though the letter of the law was against the union of the duke and the Flemish princess, yet that the alliance came under the category of those to which the Church should accord dispensation. Having convinced himself on this point, Lanfranc exerted his efforts earnestly as William's advocate, and though dealing with a Pope decidedly averse to the marriage, he managed matters so skilfully as to obtain a formal dispensation, which not only restored him to the Norman duke's good opinion, but gave him a higher place in the martial magnate's favour than he before occupied.