Inchbofin was the site of an early Christian monastery, said to have been founded in the 6thc. by St Rioch, a nephew of St Patrick. In 1016 the site was attacked by the Uí Briain, and Lough Ree continued to be a crucial border area between Meath, Bréifne and Connacht into the twelfth century, when battles were fought on the lake between the forces of these kingdoms.