Lecharrownahone (from Irish: Leathcheathrú na hAbhann, meaning 'The half-quarterland of the river' - Local pronunciation is 'Lahernahone') is a townland in the civil parish of Templeport, County Cavan, Ireland. It lies in the Roman Catholic parish of Templeport and barony of Tullyhaw.
Lecharrownahone is bounded on the north by Carrowmore, County Cavan and Derryginny townlands in Tomregan parish and by Drumane townland, on the west by Killynaff and Crossmakelagher townlands, on the south by Cormeen townland in Kildallan parish and on the east by Agharaskilly townland in Tomregan parish. Its chief geographical features are the Shannon-Erne Waterway and the Crooked River (Ireland). Lecharrownahone is traversed by the regional R205 road, several rural lanes and the disused Cavan and Leitrim Railway.
The townland covers 314 statute acres.
The Plantation of Ulster 1609 Baronial Map depicts the townland as Nahowen.
The 1665 Down Survey map depicts it as Lackaneaghone.
William Petty's map of 1685 depicts it as Lakanhon.
In the Plantation of Ulster by grant dated 23 June 1610, along with other lands forming the Manor of Calva, King James VI and I granted two polls of Nahownee to Hugh Culme. In the same year Culme surrendered his interest to Walter Talbot of Ballyconnell. Walter Talbot died on 26 June 1625 at Ballyconnell and his son James Talbot succeeded to the Ballyconnell estate aged just 10 years. An Inquisition held in Cavan on 20 September 1630 found that James Talbot was seized of two polls of Nationna, along with other lands. James Talbot married Helen Calvert, the daughter of George Calvert, 1st Baron Baltimore of Maryland, USA, in 1635. In the aftermath of the Irish Rebellion of 1641 James Talbot's estate was confiscated because he was a Catholic and he was granted an estate in 1655 at Castle Rubey, County Roscommon instead. He died in 1687. Talbot's land in Lecharrownahone was distributed as follows-