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

The Irish surnames in use today are underpinned by a multitude of rich histories. The name O'Clancies 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'Clancies family

The surname O'Clancies 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'Clancies family

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

O'Clancies Spelling Variations

The archives that survive today demonstrate the difficulty experienced by the scribes of the Middle Ages in their attempt to record these names in writing. Spelling variations of the name O'Clancies dating from that time include Clancy, Clancey, Clanchey, Clanchy, Clansey and many more.

Early Notables of the O'Clancies family

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

Migration of the O'Clancies family

A massive wave of Irish immigrants hit North America during the 19th century. Although many early Irish immigrants made a carefully planned decision to leave left Ireland for the promise of free land, by the 1840s immigrants were fleeing a famine stricken land in desperation. The condition of Ireland during the Great Potato Famine of the late 1840s can be attributed to a rapidly expanding population and English imperial policies. Those Irish families that arrived in North America were essential to its rapid social, industrial, and economic development. Passenger and immigration lists have revealed a number of early Irish immigrants bearing the name O'Clancies: 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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