Gíolla Íosa Mór Mág Tighearnán (anglicised 'Big' Gilleese McKiernan) was chief of the McKiernan Clan and Baron or Lord of Tullyhunco barony, County Cavan from c. 1269 until his death in 1279.
Gíolla Íosa Mór Mág Tighearnán (anglicised 'Big' Gilleese McKiernan) was chief of the McKiernan Clan and Baron or Lord of Tullyhunco barony, County Cavan from c. 1269 until his death in 1279. (en)
Gíolla Íosa Mór Mág Tighearnán (anglicised 'Big' Gilleese McKiernan) was chief of the McKiernan Clan and Baron or Lord of Tullyhunco barony, County Cavan from c. 1269 until his death in 1279. (en)