Clough Oughter Castle, situated on a small island in the heart of Lough Oughter, stands as one of Cavan’s most striking and eerie landmarks. Its crumbling towers rising from the misty waters evoke the perfect image of a haunted ruin. Built in the 13th century, the castle has witnessed countless acts of violence and death. It served as a fortress during times of war and rebellion and was later used as a prison, setting the stage for the chilling tales that have emerged over the years.

One of the most notable figures tied to the castle’s dark history is William Bedell, the Protestant bishop of Kilmore, who is renowned for commissioning the first Irish translation of the Bible. In 1641, Bedell was imprisoned at Clough Oughter Castle for three weeks over Christmas, enduring harsh conditions in a cold, windowless prison. He later succumbed to illness, believed to be a result of his harsh treatment during captivity.

But it is the death of Eoghan Rua O’Neill (also known as Owen Roe O’Neill), the nephew of the famous Irish chieftain Hugh O’Neill, that has cemented Clough Oughter Castle’s place in Irish ghost lore. O’Neill, a prominent military leader in the 17th century, died in 1649 under mysterious circumstances—some say he was poisoned by a priest working for the English, while others believe it was the result of an old wound. Legend has it that his body was smuggled from Clough Oughter Castle in the dead of night and secretly buried at a Franciscan Abbey in Cavan Town. Some stories even claim his remains were laid to rest on a nearby island at Trinity Abbey in Lough Oughter.

No matter the true location of his burial, local lore suggests that O’Neill’s spirit never left the island. Many believe his ghost still haunts the ruins of Clough Oughter Castle, forever tied to the place of his death.