Íomhaor mac Tighearnán Mág Tighearnán

Íomhaor mac Tighearnán Mág Tighearnán (anglicised Ivor McKiernan) was chief of the McKiernan Clan and Baron or Lord of Tullyhunco (Middle Irish: Teallach Dunchadha) barony, County Cavan from 1258 until his death c.1269.

Ancestry

Íomhaor was the son of Tighearnán who was son of Duarcán, son of Íomhaor, son of Gíolla Chríost, son of Amhlaoibh, son of Tighearnán, the eponym.[1]

Chieftainship

On the death of the previous chief, Macraith Mág Tighearnán, Íomhaor took the chieftaincy and resided in the castle of Croaghan of the Cups (Middle Irish: Cruachan O Cúbhrán), now in the townland of Coolnashinny, besides the modern town of Killeshandra. Macraith had been killed in 1258 by Domnall O'Ruairc (son of Conchobar son of Tigernán), king of Breifne from 1258 to 1258, and the McKiernans soon took their revenge.[2] Domnall and his brother Muirchertach were killed by the Teallach Dunchadha in 1260.

References

M.V. Duignan (1934), "The Uí Briúin Bréifni genealogies", pp. 90–137, in JRSAI Vol. 4, No. 1, Jun. 30, 1934.
C. Parker, “Two minor septs of late medieval Breifne”, in Breifne Journal, Vol. VIII, No. 31 (1995), pp. 566–586

Preceded by Macraith Mág Tighearnán	Chief of McKiernan Clan 1258–1269 AD	Succeeded by Gíolla Íosa Mór Mág Tighearnán

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[1] M.V. Duignan (1934), "The Uí Briúin Bréifni genealogies", pp. 90–137, in JRSAI Vol. 4, No. 1, Jun. 30, 1934.

[2] C. Parker, “Two minor septs of late medieval Breifne”, in Breifne Journal, Vol. VIII, No. 31 (1995), pp. 566–586