The present parish of Milltown was formed with the unification of the parishes of Adergoole and Liskeavy at some point between the years 1704 and 1801. Prior to this, Liskeavy and Adergoole were separate parishes with churches in each, while there was no church in Milltown. In 1803, a thatched oblong church was built in Kilclooney measuring approximately eighty feet by twenty. A much smaller church was also built around the same time as Kilclooney in the townland of Kilerneen or Drim.