Lough Oughter Castle is situated on an island on Lough Oughter. The Anglo Normans built the historical 12th century castle when they tried to conquer the East Breifne area. It was once the stronghold of the O’Reilly Clan, rulers of East Breifne and used as a prison for the rest of the middle ages.
Lough Oughter played a pivotal role in the 1641 Rebellion. It was here that Eoin Roe O’Neill was training his force when he died in 1649. The castle was one of the last confederate strongholds to surrender in Ireland to the Cromwellian forces in 1653.
