Show ContentsO'Coleghan History, Family Crest & Coats of Arms

While the Anglicized versions of Irish names are familiar to most people, many Irish names have a long and proud Gaelic heritage that is often unknown. The O'Coleghan surname stems from two distinct Gaelic names O'Clúmháin, derived from the Irish root "clúmh," meaning "down," or "feathers," and from Ó Colmain, derived the Latin word "columba," which means "dove." 1

Early Origins of the O'Coleghan family

The surname O'Coleghan was first found in County Sligo (Irish: Sligeach), in the province of Connacht in Northwestern Ireland, where they were a sept of O'Colmain, a branch of Hy Fiachrach. 2

Early History of the O'Coleghan family

This web page shows only a small excerpt of our O'Coleghan research. Another 178 words (13 lines of text) covering the year 1172 is included under the topic Early O'Coleghan History in all our PDF Extended History products and printed products wherever possible.

O'Coleghan Spelling Variations

During the Middle Ages, a standardized literary language known by the general population of Ireland was a thing of fiction. When a person's name was recorded by one of the few literate scribes, it was up that particular scribe to decide how to spell an individual's name. So a person could have several spelling variations of his name recorded during a single lifetime. Research into the name O'Coleghan revealed many variations, including Colman, Coleman, O'Colman, MacColeman, McColeman, Coalman, Coulman, Colemen, Colmen, Coalmen, Colmin, Colmen, Coulmen, Coulmin, Colemin and many more.

Early Notables of the O'Coleghan family

More information is included under the topic Early O'Coleghan Notables in all our PDF Extended History products and printed products wherever possible.

Migration of the O'Coleghan family

In the 18th and 19th centuries, thousands of Irish families fled an Ireland that was forcibly held through by England through its imperialistic policies. A large portion of these families crossed the Atlantic to the shores of North America. The fate of these families depended on when they immigrated and the political allegiances they showed after they arrived. Settlers that arrived before the American War of Independence may have moved north to Canada at the war's conclusion as United Empire Loyalists. Such Loyalists were granted land along the St. Lawrence River and the Niagara Peninsula. Those that fought for the revolution occasionally gained the land that the fleeing Loyalist vacated. After this period, free land and an agrarian lifestyle were not so easy to come by in the East. So when seemingly innumerable Irish immigrants arrived during the Great Potato Famine of the late 1840s, free land for all was out of the question. These settlers were instead put to work building railroads, coal mines, bridges, and canals. Whenever they came, Irish settlers made an inestimable contribution to the building of the New World. Early North American immigration records have revealed a number of people bearing the Irish name O'Coleghan or a variant listed above, including: Thomas Coleman, who arrived in America from Marlborough in Wiltshire, England; Thomas Coleman settled in Newbury, and later Boston, Massachusetts. He was under contract, but not indentured to Sir Richard Saltonstall, to keep his cattle. He was negligent and unfaithful, as the court ruled, but, strangely a year later in 1637.



  1. Harrison, Henry, Surnames of the United Kingdom: A Concise Etymological Dictionary Baltimore: Geneological Publishing Company, 2013. Print
  2. MacLysaght, Edward, More Irish Families. Dublin: Irish Academic Press, 1982. Print. (ISBN 0-7165-0126-0)


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