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

All Irish surnames have a unique and often romantic meaning. The name O'Mungyn originally appeared in Gaelic as Ó Mongain, which is derived from the word mongach, which means hairy. 1

Early Origins of the O'Mungyn family

The surname O'Mungyn was first found in Connacht (Irish: Connachta, (land of the) descendants of Conn), where they held a family seat and styled as one of the Irish Clanns who were descendants of King Niall of the Nine Hostages. They were descended through Eochy Moyvane, to Niall Mor, his son, the great Niall of the Nine Hostages. Descended was O'Mongain the great chief of the Mangans whose territories included branches in Mayo, Connacht, Cork and Limerick.

Early History of the O'Mungyn family

This web page shows only a small excerpt of our O'Mungyn research. Another 83 words (6 lines of text) covering the years 1772, 1803 and 1852 are included under the topic Early O'Mungyn History in all our PDF Extended History products and printed products wherever possible.

O'Mungyn Spelling Variations

During the Middle Ages, a standardized literary language known by the general population of Ireland was a thing of fiction. When a person's name was recorded by one of the few literate scribes, it was up that particular scribe to decide how to spell an individual's name. So a person could have several spelling variations of his name recorded during a single lifetime. Research into the name O'Mungyn revealed many variations, including Ó Mongain (Gaelic), Mangan, Mongan, Mongin, Mungan, Mungen, Mongun, O'Mongan, O'Mongin, O'Mungen, O'Mongun, O'Mongun, O'Mangan and many more.

Early Notables of the O'Mungyn family

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

Migration of the O'Mungyn 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'Mungyn or a variant listed above: John, Mary and Judy Mangan who arrived in New York State in 1853; Francis, Henry, James, John, Michael, Patrick, Thomas, and William Mangan, all arrived in Philadelphia, Pennsylvania between 1826 and 1868.



  1. MacLysaght, Edward, The Surnames of Ireland. Ireland: Irish Academic Press, sixth edition, 1985. Print. (ISBN 0-7165-2366-3)


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