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

While many Irish names are familiar, their past incarnations are often shrouded in mystery, reflecting the ancient Gaelic heritage of their bearers. The original Gaelic form of the name O'Cullen is "Mac Cuilinn" or "Ó Cuilinn," which are from the word "cuileann," which means "holly." 1

They descend from Heber, who with his brother Heremon ruled Ireland. 2 Culen or Colin, son of Indulph, was King of Scotland or Alba (967-71?) "His father, Indulph, was the first king who occupied Edinburgh, up to that time within Anglian Northumbria. " 3

Early Origins of the O'Cullen family

The surname O'Cullen was first found in the southeast of Ireland, in the counties of Dublin, Wicklow, and Wexford. Although all but one of the many distinct septs have become extinct, this remaining sept currently provides Ireland with nearly 8000 members, enough to make Cullen the 84th most common name in Ireland.

Descended from Olioll Flann Beag, king of Munster, the Cullens made their original homeland at Glencullen, in Wicklow, and they have remained there to the present day, despite the threat of their more powerful neighbors, the O'Tooles and the O'Byrnes. They were an influential family, as indicated by the inclusion of Cullen of Cullenstown among the leading gentry of Wexford in the Clongowes manuscript of 1598.

Due to the prominence of this sept, a number of similarly-named minor septs also adopted the name Cullen, including O Cuileamhain of south Leinster, which is also rendered Culloon or Culhoun, and Mac Cuilin of Leitrim, which is also Anglicized MacCullen.

Early History of the O'Cullen family

This web page shows only a small excerpt of our O'Cullen research. Another 70 words (5 lines of text) covering the years 1300, 1516, 1517, 1528, 1531, 1534, 1542, 1659, 1803 and 1878 are included under the topic Early O'Cullen History in all our PDF Extended History products and printed products wherever possible.

O'Cullen Spelling Variations

Up until the mid twentieth century, surnames throughout the world were recorded by scribes with little regard of spelling. They recorded the name as they thought the surname should be spelt. Accordingly, research into the name O'Cullen revealed spelling variations, including Cullen, Cullan, Cullane, O'Cullen, Cullain, Cullin, Cullon, McCullen, MacCullen, O'Cullane, Culen, Culan, Culain, Cullaine, Culaine, MacCulen, MacCollin, MacColin, O'Colen, O'Collen, O'Cuilin, O'Cuillin, O'Culane, O'Culen, O'Culhoon, O'Culloon, MacCullen, Cullain, Culon, Cullon, Culling and many more.

Early Notables of the O'Cullen family

Notable among the family name at this time was

  • Patrick O'Cullen, (d. 1534), Bishop of Clogher (1517-1542.) He "was an Augustinian hermit and prior of St. John without Newgate in Dublin. He was appointed to the see of Clogher by Leo X on 11 Feb. 15...

Migration of the O'Cullen family

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 O'Cullen: Henry Cullen who settled in Boston Massachusetts in 1820; L. Cullen settled in Baltimore in 1820; Patrick Cullen settled in West New Jersey in 1772; the family also settled in New York and California in the 19th century. Popular Christian names of the settlers was Andrew, Bernerd, Charles, Daniel, Dennis, Edward, George, James, John, Michael, Owen, Patrick, Peter, Robert, Thomas, Walter, and William, and they settled mostly in Philadelphia between 1830 and 1870. William Cullen was a property owner in St. John's Newfoundland in 1794 and had been settled there for 17 years.



  1. MacLysaght, Edward, Supplement to Irish Families. Baltimore: Genealogical Book Company, 1964. Print.
  2. O'Hart, John, Irish Pedigrees 5th Edition in 2 Volumes. Baltimore: Genealogical Publishing Company, 1976. Print. (ISBN 0-8063-0737-4)
  3. Smith, George (ed), Dictionary of National Biography. London: Smith, Elder & Co., 1885-1900. Print


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