After the arrival of Thorold at Peterborough, being accompanied by 160 well-armed Frenchmen, he proceeded to turn his attention to the Camp of Refuge, situated near Ely; and, joining Ives of Taillebois in an assault upon it, was repulsed by Hereward de Wake, and taken prisoner, with many of the monks; nor was he liberated, according to Dean Patrick, until he had paid three thousand marks. After his liberation, he returned to the monastery, and made himself more odious to the monks than before. He was depraved and dissolute, and, to satisfy his licentious desires, he is said to have made free with the treasury. He introduced two monks likewise into the monastery, who were foreigners, and quite as unscrupulous as himself, in purloining the wealth of the abbey. He was afterwards made a bishop in France, but owing to his utter recklessness of conduct and morality, he was sent back to England four days after: was again admitted abbot of the monastery of _Peterburgh_, where he died in 1098, after an odious government of twenty-eight years. During the reign of Henry I., the son of the Conqueror, Ernulphus became Abbot of _Peterburgh_. This event took place in the year 1107, and he made several important improvements in the monastery; built a new dormitory and refectory, and completed the chapter-house, which had been left in an unfinished state for several years. He likewise enriched the convent by making an arrangement with all who held in rent the abbey lands to pay tithes to him, and, when they died, that they should give the third part of their estates to be buried in the church. Thus it was that the monastery continued to grow in wealth, and when Ernulphus was made Bishop of Rochester, which happened in 1114, the abbey was entitled to a tithe of 40,800 acres of land. During the rule of his successor, John de Sais, the monastery was burned down. The fire is said to have occurred accidentally, and such was the violence of the flames, that they reached the village and consumed most of the cottagers' houses. The additions which Ernulphus had made to the abbey, however, are said to have escaped the general ruin. [1] The most probable etymology of this word is that which is given by Britton in his History of Peterborough Cathedral, viz.--"_Mede_ or _Mead_, a meadow; _ham_, a sheltered habitation; and _sted, stead_, or _stad_, a bank, station, or place of rest." [2] In cleaning out the river, a little below the bridge, in June, 1820, a dagger was found, which is supposed to have belonged to these Danes. It is in the possession of the present Bishop.