O'Mailey History, Family Crest & Coats of Arms

The surname O'Mailey originally appeared in Gaelic as "O Maille."

Early Origins of the O'Mailey family

The surname O'Mailey was first found in County Mayo (Irish: Maigh Eo) located on the West coast of the Republic of Ireland in the province of Connacht, where they held a family seat from ancient times.

"The O'Malley's were celebrated Chiefs whose territory comprised the present Baronies of Murrisk and Burrishoole in the County Mayo. The Malleys and O'Malleys are now located principally in the two baronies named, and in that of Erris, in County Mayo. " [1]

Early History of the O'Mailey family

This web page shows only a small excerpt of our O'Mailey research. Another 44 words (3 lines of text) covering the years 1503, 1603, 1760, 1854 and 1843 are included under the topic Early O'Mailey History in all our PDF Extended History products and printed products wherever possible.

O'Mailey Spelling Variations

Irish names were rarely spelled consistently in the Middle Ages. Spelling variations of the name O'Mailey dating from that time include Malley, Mallay, Mally, O'Mally, Mailley, O'Malley, O'Mailey, Mailey, Maley, Mealey, Mealley, Meally and many more.

Early Notables of the O'Mailey family (pre 1700)

Another 44 words (3 lines of text) are included under the topic Early O'Mailey Notables in all our PDF Extended History products and printed products wherever possible.

Migration of the O'Mailey family

To escape the religious and political discrimination they experienced primarily at the hands of the English, thousands of Irish left their homeland in the 19th century. These migrants typically settled in communities throughout the East Coast of North America, but also joined the wagon trains moving out to the Midwest. Ironically, when the American War of Independence began, many Irish settlers took the side of England, and at the war's conclusion moved north to Canada. These United Empire Loyalists, were granted land along the St. Lawrence River and the Niagara Peninsula. Other Irish immigrants settled in Newfoundland, the Ottawa Valley, New Brunswick and Nova Scotia. The greatest influx of Irish immigrants, however, came to North America during the Great Potato Famine of the late 1840s. Thousands left Ireland at this time for North America and Australia. Many of those numbers, however, did not live through the long sea passage. These Irish settlers to North America were immediately put to work building railroads, coal mines, bridges, and canals. 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'Mailey or a variant listed above, including: Anthony Mally who settled in Philadelphia in 1854; Michael, William, Anthony, Hugh, John, Patrick, and Thomas Malley, who all arrived in Philadelphia between 1840 and 1860.



  1. ^ Matheson, Robert E., Special Report on Surnames in Ireland with Notes as to Numeric Strength, Derivation, Ethnology, and Distribution. Dublin: Alexander Thom & Co., 1894. Print


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