Show ContentsMcIlrea History, Family Crest & Coats of Arms

The name McIlrea has seen many modifications since the time in which it was first devised. In Gaelic it appeared as Mac Giolla Rua, which means son of the red-haired youth.

Early Origins of the McIlrea family

The surname McIlrea was first found in County Clare (Irish: An Clár) located on the west coast of Ireland in the province of Munster, where they were the Chiefs of Clonderlaw, conjecturally descended from Tiobraid, son of Iral Glunmhar, King of Ulster. 1

Early History of the McIlrea family

This web page shows only a small excerpt of our McIlrea research. Another 148 words (11 lines of text) covering the years 1376, 1638 and 1640 are included under the topic Early McIlrea History in all our PDF Extended History products and printed products wherever possible.

McIlrea Spelling Variations

Numerous spelling variations were revealed in the search for the origin of the name McIlrea family name. Before widespread literacy, a person entrusted the proper documentation of his name to the individual scribe. As a result, a name was often recorded under several different variations during the life of its bearer. Variations found include Gilroy, Kilroy, MacGilroy, MacElroy, MacGreevy, Greevy, MacGilrea, McGilroy, McElroy, McGreevy, McGilrea, MacIlrea, McIlrea, Magilroy, Magilrea, MacElry, McElry, MacIlree and many more.

Early Notables of the McIlrea family

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


United States McIlrea migration to the United States +

Often leaving from racial discrimination and colonial oppression, thousands of families left Ireland in the 19th century for North America aboard passenger ships. Many early immigrants found a plot of land to call their own, something unimaginable for most Irish families. Those that arrived later were often accommodated as laborers since there was a large demand for cheap labor. This was the fate for many of the families that arrived in North America during the Great Potato Famine of the late 1840s. Whether they became agrarian settlers or industrial workers, the Irish that came to North America were invaluable for rapid development of the infant nations of the United States and Canada. Early North American immigration records have revealed a number of people bearing the Irish name McIlrea or a variant listed above:

McIlrea Settlers in United States in the 19th Century
  • William McIlrea, who landed in Philadelphia in 1834


  1. O'Hart, John, Irish Pedigrees 5th Edition in 2 Volumes. Baltimore: Genealogical Publishing Company, 1976. Print. (ISBN 0-8063-0737-4)


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