On the other side of the creek, the O'Connors built the Friary of Lislaughtin in 1478, known locally as Lislaughtin Abbey ("Lios Laichtin", meaning Lachtin's Enclosure). St Lachtin was the first to preach Christianity in the area. Two of the O'Connor chiefs are buried within its walls. The Abbey was raided twice by English forces coinciding with the military action against Carrigafoyle Castle. The Abbey was dissolved in the 17th century. A processional cross, possibly buried by the friars for safekeeping, survived the raids and was later discovered by a farmer. This processional cross, known as Lislaughtin Cross, is now on display in the National Museum in Dublin. Today, the Abbey and its grounds serve as the town's primary Roman Catholic cemetery.