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. Removed from the cloisters of Bec-Hellouin to figure as Abbot of Caen, Lanfranc became the soul of William's councils and his plenipotentiary at Rome. He it was who, in that capacity, brought to a successful issue the negotiations regarding the invasion of England. When the papal legate proposed Lanfranc as Stigand's successor in the archbishopric of Canterbury, William gladly approved of the selection. Lanfranc was then at Caen. No time, however, was lost in sending him to England. Matilda hastened his departure; and his arrival was celebrated by the Normans with joy. "He is," said they, "an institutor sent from God to reform the habits of the English." The gratification which the elevation of Lanfranc caused was not confined to the conquerors of Neustria and England. The Pope evinced his high satisfaction by sending his own pallium to the new archbishop, with an epistle worded in the most complimentary strain. "I long to see your face," wrote the Pontiff, "and am only consoled for your absence by reflecting on the happy fruits which England will derive from your care." When Lanfranc made his entry into Canterbury, the condition to which the church was reduced filled his heart with sadness. During the Conquest the edifice had met with rough treatment. It had been pillaged, despoiled of its ornaments, and even set on fire, and the high altar was half buried beneath a heap of rubbish. It was not difficult for a man of Lanfranc's influence to repair the church; but there was a grave question, whether Canterbury or York should possess the primacy of England, which had long furnished matter for dispute. It was a serious controversy, and one from which Lanfranc felt that it would ill become him to shrink.