Show ContentsMcClery History, Family Crest & Coats of Arms

The name McClery originally appeared in Gaelic as Ó Cleirigh, from the word "cleireach," which means "clerk" or "cleric." 1 The name denotes a descendant of Cleireach, who was born around 820 AD, and descended from Guaire the Hospitable, the famous king of Connacht.

Early Origins of the McClery family

The surname McClery was first found in County Galway. A descendent of Guaire, Cleireach, the namesake of the O'Clerys, was born around 820 AD, about two hundred years before hereditary surnames came into general use. 2 However, the name O'Clery first appeared around 950 AD, making it one of the earliest recorded hereditary surnames. The O'Clerys were the dominant sept in what is now the diocese of Kilmacduagh in the county of Galway, but declined in power until they were forced out of their original territory by the mid-13th century. The most important branch of the family settled in Counties Derry and Donegal and became prominent historians and poets. The branch that settled in County Cavan has seemingly all but vanished. However, the English surname Clarke has been widely substituted for O'Clery there, following the Plantation of Ulster, and many Irish Clarkes may actually be O'Clerys, rather than descendants of English settlers. Another branch is still fairly common in the counties of Kilkenny, Waterford, and Tipperary. The name is presently found mostly in Munster and Dublin.

Early History of the McClery family

This web page shows only a small excerpt of our McClery research. Another 96 words (7 lines of text) covering the years 1172, 1450, 1507, 1636, 1781 and 1860 are included under the topic Early McClery History in all our PDF Extended History products and printed products wherever possible.

McClery Spelling Variations

One must realize that attempting to record a Gaelic name in English was a daunting task. Even today the translation is a difficult one. Accordingly, spelling variations were the norm. Scribes recorded people's names as they saw fit. As a result, surnames often had many spelling variations. For McClery some of these variations included: Clery, Cleary, Claree, Clarey, Cleare, Clearey, Clerey, O'Cleary, O'Clery, Macchlery, Clerkin, Clark and many more.

Early Notables of the McClery family

Another 42 words (3 lines of text) are included under the topic Early McClery Notables in all our PDF Extended History products and printed products wherever possible.


United States McClery migration to the United States +

North America accepted thousands of Irish immigrants during the 19th century as their homeland suffered under foreign imperialistic rule. Although settlers from the early portion of the century came to North America by choice in search of land, by far the largest influx of Irish immigrants came to North America during the Great Potato Famine of the late 1840s. Many of these Irish families left the country destitute and in some cases suffering from disease. However, those who survived the long ocean voyage were especially vital to the development of industry in the United States and what would become known as Canada. Research of immigration and passenger lists has shown many early immigrants bearing the name McClery:

McClery Settlers in United States in the 18th Century
  • John McClery, who arrived in Boston, Massachusetts in 1743 3
  • Samuel McClery, who arrived in Boston, Massachusetts in 1744 3

Canada McClery migration to Canada +

Some of the first settlers of this family name were:

McClery Settlers in Canada in the 19th Century
  • Mary McClery, aged 35, who landed in Quebec in 1833
  • William McClery, aged 40, who landed in Quebec in 1833


  1. MacLysaght, Edward, The Surnames of Ireland. Ireland: Irish Academic Press, sixth edition, 1985. Print. (ISBN 0-7165-2366-3)
  2. MacLysaght, Edward, Irish Families Their Names, Arms and Origins 4th Edition. Dublin: Irish Academic, 1982. Print. (ISBN 0-7165-2364-7)
  3. Filby, P. William, Meyer, Mary K., Passenger and immigration lists index : a guide to published arrival records of about 500,000 passengers who came to the United States and Canada in the seventeenth, eighteenth, and nineteenth centuries. 1982-1985 Cumulated Supplements in Four Volumes Detroit, Mich. : Gale Research Co., 1985, Print (ISBN 0-8103-1795-8)


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