Tullytiernan, an Anglicisation of the Gaelic, ‘Tulaigh Thiarnáin', meaning Tiernan’s Hill, is a townland in the civil parish of Templeport, County Cavan, Ireland.
It lies in the Roman Catholic parish of Glangevlin and barony of Tullyhaw.
A deed by Thomas Enery dated 29 Jan 1735 includes the lands of Tullyternan.
[5] The Tithe Applotment Books for 1827 list five tithepayers in the townland.
[6] The 1836 Ordnance Survey Namebooks state- Lime is procured and is burned and used for manure.