Turstine a monk of Caen, in Normandy, who, in 1801, was sent over to England and installed first Norman abbot of Glastonbury Abbey. Through his influence, William I granted the abbey a charter, restoring its lost lands, and confirming all its privileges. In a general council, he opposed the assumptions of Giso, bishop of Wells, and was so successful that Giso had to go to Glastonbury and there have decided the question of jurisdiction over the two minor monasteries, Muchelney and Etheling. Turstine then turned his attention to the internal arrangements of the abbey, but by his introduction of foreign practices brought about insubordination among the monks. French soldiers were brought in, who slew some of the monks while in the sanctuary. Turstine was obliged to retire to; Normandy in disgrace. William II permitted him to return to the abbey on payment of five hundred pounds in silver, but he seems not to have stayed there. See Hill, English Monasticism, p. 247, 248, 252.