Irish America

Irish America

James G. Ryan

Roots: Byrnes and O’Beirnes

By James G. Ryan

September / October 1997

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The names O'Byrne and O'Beirne (or Byrne and Beirne) are often regarded as variants of the same name, much to the annoyance of the less-common Beirnes. In fact, the names spring from totally different sources. O'Byrne is derived from the Gaelic O'Broin, meaning "descended from Bran," an 11th century King of Leinster. The O'Byrnes were chieftains of what is now County Kildare … [Read more...] about Roots: Byrnes and O’Beirnes

Roots: O’Mahoney, McMahon and Vaughan

By James G. Ryan

Fall 2024

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The families of McMahon and O’Mahoney are related only by the common derivation of their names from the Irish name Mahon (in Gaelic Mathuna) which was a personal name, meaning a bear. The O’Mahoney or Mahony name is derived from Mathuna, a grandson of Brian Boru. The family were the Eoganacht, the regal dynasty of Munster and were one of the most prominent of West Munster. … [Read more...] about Roots: O’Mahoney, McMahon and Vaughan

Roots: Phelan, Whelan, and Fallon

By James G. Ryan

April / May 1999

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The origin of the names Phelan and Whelan is an excellent example of the vagaries of Anglicization of Irish names. Both of these names are derived from the same Gaelic name O'Fáolain. Although Whelan is more common, Phelan is common in areas of Kilkenny and Waterford. The O'Faoláins were Princes of the Decies, a kingdom in the area of the current County Waterford. The Fallons … [Read more...] about Roots: Phelan, Whelan, and Fallon

Roots: The Connolly Family

By James G. Ryan

August / September 1999

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The Connolly family are an ancient sept of Ireland's western province of Connacht. The Gaelic form of the name is O'Conghaile. The original sept dispersed and in time three separate families developed based in Cork, Meath and Monaghan. However, the name is mainly found in Monaghan and in its native Connaught where it is sometimes spelled Connelly. There is also an unrelated … [Read more...] about Roots: The Connolly Family

Roots: The O’Neill Family

By James G. Ryan

June / July 1999

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There are several different septs of the O'Neills in County Clare (where the name is also spelled O'Nihill), in Waterford and in Carlow. The most famous of the O'Neills, however, are the O'Neills of Tyrone, in the province of Ulster. The name in Gaelic means descendant of Neil or Niall, which was, and still is, a popular personal name in Ireland. In the U.S. the name is … [Read more...] about Roots: The O’Neill Family