The coming of the Normans in the 12th century sounded the death knell for many of these early Christian settlements and the lands were subsumed (despite heated objections from the Earls Marshall, who wanted it for themselves) into the Manor of Durrow, an Episcopal Manor for the Bishops of Ossory. Indeed, it was this development that sowed the seeds for the establishment of the town of Durrow as we now know it. In 1245, Geoffrey de Turville, the Bishop of Ossory from 1244 to 1250, was granted permission from the King to hold a yearly fair at this manor for six days beginning on St. Swithin's Day and a weekly market on a Thursday.