Mullaghduff, County Cavan

Mullaghduff (Irish: Mullach Dubh) is a townland in the Parish of Tomregan, Barony of Tullyhaw, County Cavan, Ireland.

The townland name is an anglicisation of the Gaelic placename ‘Mullach Dubh’ which means "The Black Hilltop", which possibly derives from the blackish soil which covers the hill. The 1609 Ulster Plantation map spells the name as ‘Mulladuff’, the 1641 Rebellion Depositions as 'Mullaighduffe' and the 1659 Down Survey map spells it as ‘Mullaghduffe’.

It is bounded on the north by Annagh and Corranierna townlands, on the west by Cullyleenan and Agharaskilly townlands, on the south by Cavanagh townland and on the east by Cranaghan townland. Its chief geographical features are Killywilly Lough on its eastern boundary and a central drumlin hill which rises to 309 feet above sea level. Mullaghduff is traversed by the N87 road (Ireland), the Yellow road, Murray’s Lane and by the disused Cavan & Leitrim Railway.

The townland covers 253 statute acres, including three acres of water.

It formed part of the Manor of Calva which was granted to Walter Talbot in 1610 as part of the Plantation of Ulster. The 1641 Rebellion Depositions for County Cavan state that the following Irish rebels lived in Mullaghduff at the time- Farrell Og McKiernan, Turlogh McFarrell McKiernan, Owen McFarrell McKiernan, Patrick McIlmartin and Hugh McIlmartin.

Four deeds relating to land transactions in Mullaghduff in 1749 are now in the Farnham Papers held in the National Library of Ireland (Collection List No. 95). They are described as-

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