Greaghnadoony (from Irish Greach na Dúine, meaning 'The Bog of the Fort') is a townland in the civil parish of Templeport, County Cavan, Ireland.
[2] In earlier times the townland was probably uninhabited as it consists mainly of bog and poor clay soils.
It was not seized by the English during the Plantation of Ulster in 1610 or in the Cromwellian Settlement of the 1660s so some dispossessed Irish families moved there and began to clear and farm the land.
[2] A lease dated 17 September 1816 John Enery of Bawnboy includes Greaghnadoony.
[7] In 1851 the population of the townland was 40 being 17 males and 23 females, the reduction being due to the Great Famine (Ireland).