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

Etymology of O'Cavanaghs

What does the name O'Cavanaghs mean?

Irish names tend to vary widely in their spelling and overall form. The original Gaelic form of the name O'Cavanaghs is Caomhanach, an adjective denoting association with St. Caomhan. The first Kavanagh, Donal, the son of Dermot MacMurrough, was fostered by a successor of this saint.

Early Origins of the O'Cavanaghs family

The surname O'Cavanaghs was first found in County Carlow (Irish: Cheatharlach) a small landlocked area located in the province of Leinster in the South East of Ireland, where they held a family seat from very ancient times. The Kavanaghs (Cavanaghs) were descended from the MacMorough stem and were Lords of Leinster. Donoch McMorough was the King of Leinster, son of Dermod and it was from Donoch from which the Cavanaghs sprang. They were descended directly from the Heremon Line of Irish Kings. Donell, son of Dermot MacMurrough acquired the name Caomhanach, or Cavanagh. His sister Eva married Strongbow, Earl of Pembroke, the leader of the English invasion of Ireland. 1

Early History of the O'Cavanaghs family

This web page shows only a small excerpt of our O'Cavanaghs research. Another 96 words (7 lines of text) covering the years 1538, 1540, 1541, 1543, 1554, 1667, 1739 and 1889 are included under the topic Early O'Cavanaghs History in all our PDF Extended History products and printed products wherever possible.

O'Cavanaghs Spelling Variations

Those scribes in Ireland during the Middle Ages recorded names as they sounded. Consequently, in this era many people were recorded under different spellings each time their name was written down. Research on the O'Cavanaghs family name revealed numerous spelling variations, including Cavanagh, Kavanagh, Kavanah, Cavanaugh, Keevan, Cavanaw, Kavanaw, Cavenaugh, Cavanough, Cavaneagh, Cavana, Cavena, Cavinaugh, Kavina, Kavena, Kavanaugh, Cavanach, Kavanach, Cabenagh, O'Cavanagh, O'Kavanagh, Keaveney, Geaveney, M'Cavanna and many more.

Early Notables of the O'Cavanaghs family

Prominent amongst the family at this time was Cahir Mac Art Kavanagh, Lord of St. Molyns, Baron of Ballyann (d. 1554), the eldest son of Art Kavanagh of St. Molyns (Teach Molyns), and Chief of his Sept. He took part in the rebellion of the Leinster Geraldines, but submitted to Lord Leonard Grey in 1538. "He renewed his submission to Sir Anthony St. Leger in November 1540, and preferred a request to be allowed to hold his land in feudal tenure. He was anxious, he declared, to imitate his ancestor, Dermot Mac Murrough, king of Leinster, who had introduced the English...
Another 141 words (10 lines of text) are included under the topic Early O'Cavanaghs Notables in all our PDF Extended History products and printed products wherever possible.

Migration of the O'Cavanaghs family

A massive amount of Ireland's native population left the island in the 19th century for North America and Australia in hopes of finding more opportunities and an escape from discrimination and oppression. A great portion of these migrants arrived on the eastern shores of the North American continent. Although they were generally poor and destitute, and, therefore, again discriminated against, these Irish people were heartily welcomed for the hard labor involved in the construction of railroads, canals, roadways, and buildings. Many others were put to work in the newly established factories or agricultural projects that were so essential to the development of what would become two of the wealthiest nations in the world. The Great Potato Famine during the late 1840s initiated the largest wave of Iris immigration. Early North American immigration and passenger lists have revealed a number of people bearing the name O'Cavanaghs or a variant listed above: Charles, Dudley, James, John, Joseph, Michael, Nicholas, Peter, Robert, Thomas and William Cavanagh, who all arrived in Philadelphia, Pennsylvania between 1813 and 1880.



  1. Lower, Mark Anthony, Patronymica Britannica, A Dictionary of Family Names of the United Kingdom. London: John Russel Smith, 1860. Print.


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