Prof. John Le Patourel , in `` The Building of Castle Cornet '' , mentions that in 1566 iron and hammers were taken to `` Creavissham '' , and the island quarried for the castle .
Prof. John Le Patourel , in `` The Building of Castle Cornet '' said that in 1566 , iron and hammers were taken to `` Creavissham '' , and the island quarried for the castle .