During the third year of this abbot, William the Conqueror invaded England, and we are told that Leofric fought for some time in the English army, but in consequence of ill health, was obliged "to return to his monastery, where he died on the third of the kalends of November, A.D. 1066." Braddo (or Brand) was the next successive abbot, but died after a rule of three years. Thorold of Fescamp, who for some service rendered to the conqueror, had been appointed to an abbacy near Salisbury, was considered by William, on account of his soldier-like qualities, to be a fit person to transfer to the rebellious and disorderly neighbourhood of the Camp of Refuge, and he was accordingly appointed Abbot of Peterborough, in 1069. Between the death of Braddo and the arrival of his successor, the second destruction of the monastery took place. A band of Danish soldiers, headed by Hereward de Wake, nephew of Braddo, attacked the monastery, and all the valuable treasures which it possessed were either taken away or destroyed. They then set fire to the building. The following is Gunton's account of the treasures which they captured; and, as it puts us in possession of much curious information concerning those times, we will give the extract entire:--"They took the golden crown from the head of the crucifix, the cross with the precious stones, and the footstool under; _duo aurea feretra_ (two golden or gilded biers whereon they carried the saints' reliques, and other such like things, in procession), and nine silver ones; and twelve crosses, some of gold and some of silver. And, besides all this, they went up to the tower and took away the great table which the monks had hidden there, which was all of gold, and silver, and precious stones, and wont to be before the altar, with abundance of books, and other precious things, which were valuable, there being not the like in all England." The monks were disconsolate at the loss of these valuable treasures, and the abbot solicited William the King to interfere for them, in order that they might be returned. It appears, however, that the conqueror did not pay much attention to their request; and it is probable that, as he had just after this depredation concluded a treaty of peace with the Danish sovereign, he was unwilling to do anything that should cause a breach of peace between them, especially as they were such troublesome and dangerous enemies. The greater part of the treasure was by some means once more restored to the monks,[5] and, according to the Saxon chronicler, they commenced from this time to build ramparts for their own protection, and for the security of the monastery. Tout Hill[6] in the vineyard field was raised at this time, and there is said to have been a subterraneous passage which ran thence to Croyland and Thorney. This hill was originally called Mount Thorold.