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

Etymology of O'Calens

What does the name O'Calens mean?

The name O'Calens comes from the Irish Gaelic name Ó Cathalain. The Gaelic versions of today's Irish names demonstrate a link to a proud, ancient past. The name is possibly derived from Cathalan, King of Farney slain in 1028, whose name means Little Charles. Cathalan was in turn descended from Coleman Mor, King of Meath and (the 133rd Monarch of Ireland). 1

Early Origins of the O'Calens family

The surname O'Calens was first found in County Roscommon (Irish: Ros Comáin) located in central Ireland in the province of Connacht, where they held a family seat from very ancient times.

Caillin (fl. 560), was an Irish saint, "son of Niata, descended from Rudraighe, whose grandson, Fergus Mac Roigh, flourished at the beginning of the Christian era. His mother was Deighe, granddaughter of Dubhthach, chief poet of King Laogaire in the time of St. Patrick. The authority for the history of St. Caillin is the ancient ‘Book of Fenagh,’ a series of poetical rhapsodies, written about 1400, a copy of which with a connecting narrative in prose was made in 1516. we may gather the following facts of St. Caillin's history from this curious repertory of ancient traditions: ‘The descendants of Medbh and Fergus, viz. the children of Conmac, Ciar, and Corc, grew and multiplied throughout Ireland. The children of Conmac especially were in Connaught.’ Those were the Conmaicne of Dunmor, kinsmen of Caillin's. Resolved to remedy the congestion of the population by killing each other, the Conmaicne would no doubt have carried out their plan but for the interference of St. Caillin. By the advice of an angel they sent messengers to him at Rome, whither he had gone for his education." 2

Early History of the O'Calens family

This web page shows only a small excerpt of our O'Calens research. Another 149 words (11 lines of text) covering the years 1027 and 1280 are included under the topic Early O'Calens History in all our PDF Extended History products and printed products wherever possible.

O'Calens Spelling Variations

Irish names were rarely spelled consistently in the Middle Ages. Spelling variations of the name O'Calens dating from that time include Callan, Callanan, Caillan, Calan, Calanan, Callen, Callin, Callon, Callinan, Callinon and many more.

Early Notables of the O'Calens family

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

Migration of the O'Calens family

Thousands of Irish families left for North American shores in the 19th century. These people were searching for a life unencumbered with poverty, hunger, and racial discrimination. Many arrived to eventually find such conditions, but many others simply did not arrive: victims of the diseased, overcrowded ships in which they traveled to the New World. Those who lived to see North American shores were instrumental in the development of the growing nations of Canada and the United States. A thorough examination of passenger and immigration lists has disclosed evidence of many early immigrants of the name O'Calens: Peter Callan who settled in Cape Elizabeth, Maine in 1683; Charles Callan settled in Delaware in 1772; Alexander Callan settled in Wilmington, N.C. in 1774.



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


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