Drumboe Castle, 17th century castle in Stranorlar, Ireland

Drumboe Castle stood at the edge of Stranorlar, County Donegal, on the River Finn. Sir Ralph Bingley built the first castle in 1622 with four large towers, guarding a ford across the river. A Georgian house later occupied the site; it was demolished in 1945, and only ruins remain.

Sir Ralph Bingley built the original castle in 1622 after acquiring the Ballybofey estate during the Plantation of Ulster. The site later became associated with an execution of four anti-Treaty fighters during the Irish Civil War in 1923.

The Hayes family made their home here from 1789 to 1912, with several members holding important political positions. The castle served as a seat of local prominence during that period.

The site is accessible today as ruins on the outskirts of Stranorlar, making it easy to locate and visit. What remains is fragmentary stonework, so expect to see only partial walls and foundations rather than a complete building.

The castle's Irish name, Caisleán Dhroim Bó, means "castle of the ridge of the cow", a reference to the rise above the River Finn where it stood. The four men shot on 14 March 1923 were Charles Daly and Sean Larkin, both 26, and Daniel Enwright and Timothy O'Sullivan, both 23, held since January.