Ballyfarnon (historically Bellafernan, from Irish: Béal Átha Fearnáin, meaning 'ford-mouth of the alders')[2] is a village in northern County Roscommon, Ireland.

The first church at Kilronan, Keadue, County Roscommon, was built in the 8th century by St. Ronan and his daughter St. Lasair.

Sheltered by that gable is the vault of the McDermott Roes, in which Turlough O'Carolan was interred in 1738.

This gable is a memorial to the Gaelic Literary tradition from the 13th -18th century as represented by the O'Duigenans, hereditary erenachs of Kilronan (lay abbots who held church land from generation to generation), and chroniclers (as well as bards and ollavs-hereditary poets) to the MacDermots, Princes of Moylurg, down to Turlough O'Carolan, sometimes styled "The Last of the Bards".

The earlier part was built by Thomas Tenison, consisting of a 3-storey-over-basement, 3-bay symmetrical castellated block with slender corner turrets, pinnacled buttresses and tracery windows.