Clonca Church & Cross is one of the most important and popular historical sites in Inishowen. The 17th century church ruin at Clonca is believed to have been built on the foundation of an earlier church associated with a monastic site founded by St Morialagh in the 6th century. The monastery was one of the most important foundations in the development of Christianity on Inishowen. It's proximity to Carrowmore and another monastic site founded by St Boudan in Culdaff made this area a great seat of skill and learning. Only two high crosses remain - an upright tall cross and the head of another cross lying prostrate with a large base next to it.
Standing inside the church are two carved grave slabs. Although the stone on the left, see below, is quite modern in comparison to the early grave slab, it is never the less, a very interesting slab. An inscription in Lombardic lettering reads ' magnvsma corristin iaeotkiseo' translated as MAGNUS MACORRISTIN OF THE ISLES... MacGorristan is believed to have been a scotsman and there are several stories as to how this grave slab ended up at Clonca in Donegal. The beautifully carved slab bears a shinty stick and ball. Shinty is a game, very similar to hurling, played in Scotland.
References:Ogrodzieniec Castle is a ruined medieval castle originally built in the 14th–15th century by the W³odkowie Sulimczycy family. Established in the early 12th century, during the reign of Boles³aw III Wrymouth, the first stronghold was razed by the Tatars in 1241. In the mid-14th century a new gothic castle was built here to accommodate the Sulimczycy family. Surrounded by three high rocks, the castle was well integrated into the area. The defensive walls were built to close the circuit formed by the rocks, and a narrow opening between two of the rocks served as an entrance.
In 1470 the castle and lands were bought by the wealthy Cracovian townsmen, Ibram and Piotr Salomon. Then, Ogrodzieniec became the property of Jan Feliks Rzeszowski, the rector of Przemy¶l and the canon of Cracow. The owners of the castle about that time were also Jan and Andrzej Rzeszowskis, and later Pilecki and Che³miñski families. In 1523 the castle was bought by Jan Boner.