Innisfallen or Inishfallen is an island in Lough Leane; one of the three Lakes of Killarney in County Kerry, Ireland. It is home to the ruins of Innisfallen Abbey, one of the most impressive archaeological remains dating from the early Christian period found in the Killarney National Park. The monastery was founded in 640 by St. Finian the Leper, and was occupied for approximately 850 years. Over a period of about 300 of these, the monks wrote the Annals of Innisfallen, which chronicle the early history of Ireland as it was known to the monks. The monks were dispossessed of the abbey on August 18, 1594, by Elizabeth I.