Tomás Mág Tighearnán

Tomás Mág Tighearnán (anglicised Thomas McKiernan) was chief of the McKiernan Clan and Baron or Lord of Tullyhunco barony, County Cavan from 1314 until his death in 1358.

Tomás was the son of Gíolla Íosa 'Leith' Mág Tighearnán, son of Sithric ‘Carrach-in-Cairn’ Mág Tighearnán (d.1290), son of Duarcán Mág Tighearnán, the Second (d.1290), son of Íomhaor Mág Tighearnán, the Second (died c.1269), son of Tighearnán, son of Duarcán the First, son of Íomhaor the First, son of Gíolla Chríost, son of Amhlaoibh, son of Tighearnán, the founder of the clan. His grandfather Sithric ‘Carrach-in-Cairn’ Mág Tighearnán had been a previous chief of the clan. His brothers were Matha Mág Tighearnán (d. 1311) a former chief of the clan, Domhnall ’An Saithnech’ Mág Tighearnán (d.1312) another former chief of the clan, Conchobar ‘Buidhe’ Mág Tighearnán (d.1314) whom Tomás succeeded as chief, Duarcán, Cú Chonnacht, Cormac, Fergal ‘Cend Craiche’ and Mathghamhain (d.1314).

On the death of the previous chief, his brother Conchobar ‘Buidhe’ Mág Tighearnán in 1314, Tomás took the chieftaincy and resided in the castle of Croaghan of the Cups (Irish- Cruachan O'Cúbhrán), besides the modern town of Killeshandra.

In 1323 a relative died, Maoilmheadha Mág Tighearnán, the daughter of Gíolla Íosa Mór Mág Tighearnán, chief of the McKiernan Clan from c.1269 until his death in 1279, and wife of Brian ‘Breaghach’ Mág Samhradháin chief of the McGovern clan from 1272 to 1294. Maoilmheadha is referred to in the Book of Magauran at poems 1, 2, 24, 25 and 29. The Annals of the Four Masters for 1323 state- Maelmeadha, daughter of Mac Tiernan, and wife of Magauran, died.

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