Tierney

Origin & Meaning

The Tierney surname comes from Ó Tiarnaigh, meaning "descendant of the lord" — from tigerna (also tiarna), the Old Irish word for a lord or master. The personal name Tiarnaigh implies an ancestor of lordly status or bearing — a leader in his community whose descendants took pride in that connection.

The Ó Tiarnaigh sept was based in Connacht, with its primary territory in County Galway and extending into County Roscommon. This placed them in the heartland of the great Connacht kingdom — the province that gave the United States President John F. Kennedy's ancestors their roots, and which sent some of the highest concentrations of emigrants to America during the Famine.

The name has been anglicised as Tierney throughout Ireland, though regional pronunciations varied. In Ulster, a separate Ó Tiarnaigh family existed in County Fermanagh, which explains why the name appears not only in Connacht but also in the northern records. The two families share the same Gaelic origin but developed independently.

History & Notable Bearers

The Tierney family has produced notable figures across Irish public life. George Tierney (1761–1830), though of English and Irish stock, was a significant Whig politician in the British Parliament. More distinctly Irish was Cllr Mark Tierney, a prominent Galway political figure of the 20th century.

In modern Ireland, Tierney is a common name in Galway and the surrounding counties. The name appears across sport, business, and the arts in the west of Ireland. In Irish-America, the Tierney family is well established — actress Gene Tierney (1920–1991), one of Hollywood's great stars of the 1940s, was of Irish descent, her family tracing back to County Galway.

The Tierney Diaspora

Tierney families emigrated in large numbers during the Famine and post-Famine period. Connacht — the western province — was among the hardest hit by the Famine, and County Galway in particular sent hundreds of thousands of people to the ships. American Tierney families are found throughout the Irish-American communities of New York, Boston, and the Midwest.

In Australia, Galway Tierneys arrived in Victoria and New South Wales from the 1840s onward, and the name is documented in Melbourne church records and Queensland pastoral records. Argentina also received Connacht emigration, and Tierney families appear in the Irish-Argentine records of Buenos Aires province.

Genealogy Research

Galway and Roscommon records

Griffith's Valuation shows Tierney families spread across both counties. Access free via askaboutireland.ie. The 1901 and 1911 Census records are searchable at census.nationalarchives.ie.

Catholic parish registers

Diocese of Clonfert (east Galway) and Diocese of Elphin (Roscommon/Galway border) registers are available through RootsIreland.ie, with some going back to the 1790s.

IrishGenealogy.ie

Civil records from 1864 are searchable at IrishGenealogy.ie. Search under Tierney, Tierny, and Tirney for complete results.