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

The Irish surname O'Dunleavy originally appeared in Gaelic as Mac Duinnshleibh, derived from the words "dun," meaning "fortress," or perhaps "donn," which means "brown," and "sliabh," which means "mountain."

Early Origins of the O'Dunleavy family

The surname O'Dunleavy was first found in Ulidia, in northern Ireland, where they were said to have descended from the Princes of Ulidia, who were in turn descended from the Heremon line of Irish Kings; the modern name for Ulidia, is Ulster. The "Four Masters" list that in 1199, a Rory O'Dunsleve joined the English (Norman soldiers) at Meath and plundered the monastery of Saint Peter and Paul in Armagh. In the 12th century during the Anglo/Norman invasion of Ireland, the Dunleavys migrated to Tir Connell now known as Donegal and became hereditary physicians to the distinguished O'Donnells.

Early History of the O'Dunleavy family

This web page shows only a small excerpt of our O'Dunleavy research. Another 74 words (5 lines of text) covering the years 1644, 1694, 1728, 1746 and 1761 are included under the topic Early O'Dunleavy History in all our PDF Extended History products and printed products wherever possible.

O'Dunleavy Spelling Variations

People who were accounted for by scribes and church officials often had their name recorded many different ways because pronunciation was the only guide those scribes and church officials had to go by. This resulted in the problem of one person's name being recorded under several different variations, creating the illusion of more than one person. Among the many spelling variations of the surname O'Dunleavy that are preserved in archival documents are Dunleavy, Dunlevie, Dunlevy, Dunlivie, McDunleavy, Donleavy and many more.

Early Notables of the O'Dunleavy family

Notable amongst the family name at this time was Father Christopher Dunlevy, a Franciscan monk, who was martyred in 1644. Reverend Andrew Donlevy (1694- c.1761), was an Irish ecclesiastic, born about 1694, and received his early education in or...
Another 38 words (3 lines of text) are included under the topic Early O'Dunleavy Notables in all our PDF Extended History products and printed products wherever possible.

Migration of the O'Dunleavy family

Irish families left their homeland in astonishing numbers during the 19th century in search of a better life. Although individual reasons vary, most of these Irish families suffered from extreme poverty, lack of work opportunities, and exorbitant rents in their homeland. Many decided to travel to Australia or North America in the hopes of finding greater opportunities and land. The Irish immigrants that came to North America initially settled on the East Coast, often in major centers such as Boston or New York. But like the many other cultures to settle in North America, the Irish traveled to almost any region they felt held greater promise; as a result, many Irish with gold fever moved all the way out to the Pacific coast. Others before that time left for land along the St. Lawrence River and the Niagara Peninsula, or the Maritimes as United Empire Loyalists, for many Irish did choose to side with the English during the American War of Independence. The earliest wave of Irish migration, however, occurred during the Great Potato Famine of the 1840s. An examination of early immigration and passenger lists has revealed many people bearing the O'Dunleavy name: Gregory Donlevy, who was naturalized in New York, NY in 1798; Walter Donlevy, who arrived in Philadelphia in 1813; Francis William Donlevy, who was naturalized in South Carolina in 1816.



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