The building is believed to have been constructed when a church located at Conwal, not far from Churchill, fell into ruins.
The interior retains its early 19th century cast-iron circular roof, trusses and a short gallery and twisted brass brackets.
A niece of Jane Austen (daughter of her brother Edward), is buried in the graveyard there, alongside her husband Lord George Hill.
A large flat stone in the graveyard opposite the vestry door marks a Hanlon family grave several decades younger than the rapparee's death.
As of July 2018, the Parish is served by their Rector - Reverend David Houlton who currently resides in the Conwal Rectory in Letterkenny.