The Tyrrell surname is Norman in origin, derived from the de Tirel or Tyrrell family — a name of uncertain etymology, possibly connected to a Norman word for one who is stubborn or pulls against the reins — who arrived in Ireland in the twelfth century and established themselves in County Westmeath, where they held the barony of Fertullagh and built one of the recognised Hiberno-Norman lordships of the Irish midlands. A branch of the family also settled in County Kildare, and Tyrrell's Pass in Westmeath preserves the family name in the landscape of that county to the present day. The spelling Tyrrell has been the dominant form, with Tyrell encountered occasionally in older records.
The Tyrrell name spans eight centuries of Irish history from its Norman origins to its most celebrated expression in the guerrilla warfare of the Nine Years War — a family that began as agents of the Norman colonial order and ended, at their most famous moment, fighting against the English crown that had originally given them their Irish lands.
Where Did the Tyrrell Family Come From?
The Tyrrells established their principal lordship in the barony of Fertullagh in central Westmeath, in the flat midland country between the Brosna and Inny rivers. Their castle at Castletownroche in Westmeath was among the physical expressions of Norman authority in the midlands, and the family participated in the administrative and military life of Anglo-Ireland across the medieval centuries. Tyrrell's Pass — the gap in the Westmeath hills that bears their name — marked a strategic point on one of the principal routes through the county, and its name demonstrates the depth of the family's territorial identification with the Westmeath landscape.
Who Was Richard Tyrrell and Why Does He Matter?
Richard Tyrrell was a Westmeath man who became one of the most effective Irish military commanders of the Nine Years War, serving under Hugh O'Neill in the campaign against Elizabethan rule that came closest of any Irish military effort to reversing the English conquest. He operated as a captain of light cavalry and infantry in Leinster and Connacht, where his knowledge of the terrain and his mastery of guerrilla tactics made him a constant threat to English garrisons and supply lines across a vast swathe of Ireland.
His most celebrated achievement was his participation in the Battle of the Curlew Pass on 5 August 1599, when the Irish forces ambushed a large English relief column under Sir Conyers Clifford as it attempted to cross the Curlew Mountains in County Roscommon. The battle was a decisive Irish victory — Clifford was killed, his column routed, and the English attempt to relieve the besieged garrison of Collooney was abandoned. The Curlew Pass was one of the most significant Irish military successes of the Nine Years War, and Tyrrell's contribution to it was recognised by O'Neill and remembered in the annals of the period. He continued to campaign across Leinster and Munster after the war's turning point at Kinsale in 1601, eventually going into exile in Spain with O'Neill and the other leaders of the failed rebellion. His career demonstrated what the military potential of the Norman-Irish gentry could achieve when it was directed against rather than in service of the English crown — a trajectory that marked the final completion of the Gaelicisation of a family that had begun as English settlers four centuries earlier.
Where Are Tyrrell Families Found Today?
In Ireland, the Tyrrell name is found primarily in County Westmeath, County Kildare, and the surrounding midland counties, reflecting the family's medieval settlement territory. Tyrrell's Pass in Westmeath preserves the name in the local geography. The diaspora is found in the United States, Australia, and the United Kingdom, following the emigrant routes from Westmeath and Kildare established during and after the Famine. The name appears in Irish-American and Irish-Australian records from the mid-nineteenth century onward.