Show ContentsO'Cuilin 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'Cuilin 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'Cuilin family

The surname O'Cuilin 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'Cuilin family

This web page shows only a small excerpt of our O'Cuilin 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'Cuilin History in all our PDF Extended History products and printed products wherever possible.

O'Cuilin Spelling Variations

Names during the Middle Ages were typically recorded as they sounded and in many cases, one's surname spelling changed with each record. Spelling variations revealed in the search for the origin of the O'Cuilin family name include 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'Cuilin 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. 1516. In 1528 the Pope granted him a dispensation from residence on account of the poverty of his see, which had been so wasted in the wars that it was not...
Another 76 words (5 lines of text) are included under the topic Early O'Cuilin Notables in all our PDF Extended History products and printed products wherever possible.

Migration of the O'Cuilin family

Irish families began leaving their homeland for North America in the late 18th century. These families were usually modestly well off, but they were looking forward to owning and working on a sizable tract of land of their own. This pattern of emigration continued until the 1840s when the Great Potato Famine sparked a major exodus of destitute and desperate Irish people. These people were not leaving for a grant of land in North America because by this time the East Coast had reached its saturation point and free land was scarce. They were merely looking to escape the disease, starvation, and hopelessness that Ireland had fallen into. Although these unfortunate immigrants did not receive a warm welcome by the established populations in the United States and what would become Canada, they were absolutely critical to the rapid development that these two nations enjoyed. They would help populate the western lands and provide the cheap labor required for a rapid industrialization. An examination of passenger and immigration lists has revealed many early bearers of the name O'Cuilin or one of its variants: 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


Houseofnames.com on Facebook