Located on the eastern slopes of Slieve Gullion, Killevy is the reputed site of an important Early Christian Convent founded by St Moninna (also known as Darerca or Bline) in the early 6th century. Although there are no remains of the early wooden church buildings, there are two stone churches at the site. The earlier West Church has an imposing 10th or 11th Century doorway and a slightly later round headed east window. While the East Church is medieval, with a 15th Century east window complete with weathered carved heads.