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

The Irish surnames in use today are underpinned by a multitude of rich histories. The name O'Clansies originally appeared in Gaelic as Mac Fhlannchaidh. The exact meaning of this name is undetermined; it can be translated as "son of Fhlannchadh," where "flann" means "reddish" or "ruddy." However, whether "caidh" denotes warrior as has been asserted is unknown.

Early Origins of the O'Clansies family

The surname O'Clansies was first found in Counties Clare and Leitrim. The more important of the two MacClancy septs were a branch of the MacNamaras and were from the north of County Clare, where they gave their name to Cathermacclancy. They traced their lineage from the Heber kings, and provided hereditary brehons (judges) to the O'Briens. They were most numerous in County Clare and the neighboring counties of Galway and Tipperary. The other sept of MacClancys were indigenous to Leitrim, and were Chiefs of Darty or Rosclogher. 1

Early History of the O'Clansies family

This web page shows only a small excerpt of our O'Clansies research. Another 85 words (6 lines of text) are included under the topic Early O'Clansies History in all our PDF Extended History products and printed products wherever possible.

O'Clansies Spelling Variations

The search for the origins of the name O'Clansies family name revealed numerous spelling variations. These variants can be somewhat accounted for when it is realized that before widespread literacy people only recognized their name by pronunciation; it was up to scribes to decide how it was to be formally recorded. Variations found include Clancy, Clancey, Clanchey, Clanchy, Clansey and many more.

Early Notables of the O'Clansies family

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

Migration of the O'Clansies family

Thousands of Irish left in their homeland in the 18th and 19th centuries to escape the religious and political discrimination they experienced primarily at the hands of the English, and in the search of a plot of land to call their own. These immigrants arrived at the eastern shores of North America, early on settling and breaking the land, and, later, building the bridges, canals, and railroads essential to the emerging nations of United States and Canada. Many others would toil for low wages in the dangerous factories of the day. Although there had been a steady migration of Irish to North America over these years, the greatest influx of Irish immigrants came to North America during the Great Potato Famine of the late 1840s. Early North American immigration records have revealed a number of people bearing the Irish name O'Clansies or a variant listed above: Cornelius Clancey who settled in Barbados in 1680 with his wife and servants; Richard Clanchy settled in New York with his wife and eight children in 1820.



  1. MacLysaght, Edward, Irish Families Their Names, Arms and Origins 4th Edition. Dublin: Irish Academic, 1982. Print. (ISBN 0-7165-2364-7)


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