Fiach McHugh O'Byrne

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Fiach mac Aodha Ó Broin Fiach MacHugh O'Byrne
Lord of "Clann Uí Bhroin"
The armorial achievements of Fiach McHugh O'Byrne
Reign	1579–1597
Coronation	1587, County Wicklow
Predecessor	Aodh mac Seáin Ó Broin
Successor	Féilim mac Fiach Ó Broin
Born	c.1534 Ballinacor
Died	(1597-05-08)8 May 1597 Farranerin, County Wicklow
Spouse	Rose Ó Tuathail (second wife)
House	Ballinacor – Ranelagh

Fiach mac Aodha Ó Broin (anglicised as Feagh or Fiach MacHugh O'Byrne) (1534 – 8 May 1597) was Chief of the Name of Clann Uí Bhroin (Clan O'Byrne) and Lord of Ranelagh during the Elizabethan wars against the Irish clans.