Dunagan History, Family Crest & Coats of Arms
The Irish surnames in use today are underpinned by a multitude of rich histories. The name Dunagan originally appeared in Gaelic as O Donnagain. The first portion of the name is probably derived from "donn," which means "brown," while the second portion of the name is probably derived from and ancient Irish personal name. 
Early Origins of the Dunagan family
The surname Dunagan was first found in County Cork (Irish: Corcaigh) the ancient Kingdom of Deis Muin (Desmond), located on the southwest coast of Ireland in the province of Munster, where they held a family seat at Muskerry, later moving to Limerick, Kildare and Dublin.
Early History of the Dunagan family
This web page shows only a small excerpt of our Dunagan research. Another 114 words (8 lines of text) covering the years 1172, 1300, 1395, 1412, 1413, 1634 and 1715 are included under the topic Early Dunagan History in all our PDF Extended History products and printed products wherever possible.
Dunagan Spelling Variations
Individual scribes in the Ireland during the Middle Ages would often record a person's name various ways. How the name was recorded depended on what that particular scribe believed the proper spelling for the name pronounced to him was. Spelling variations revealed in the search for the origin of the Dunagan family name include Donegan, Donnegan, Doneghan, Donneghan, Donagan, Donnagan, Donnaghan, Dunnegan, O'Donegan, O'Dunnegan, O'Donnaghan, Dongan, Donegin, Donnegin, Donnagen, Donagen, Donnegen, Donegen, Donnigan, Donigan, Dunnican, Dunican, Dunnigan, McDunnigan, McDonegan, Dongane, Dongin, Dongen and many more.
Early Notables of the Dunagan family (pre 1700)
Notable among the family name at this time was John Donegan (died 1413), a medieval Manx prelate. After holding the position of Archdeacon of Down, he held three successive bishoprics, Mann and the Isles (Sodor), then...
In the United States, the name Dunagan is the 7,096th most popular surname with an estimated 4,974 people with that name. 
Irish families began to immigrate to British North America and the United States in the 18th century, but the greatest influx of Irish immigrants came during the Great Potato Famine of the late 1840s. The earlier settlers came to North America after a great deal of consideration and by paying relatively high fees for their passage. These settlers were primarily drawn by the promise of land. Those later settlers that came during the 1840's were trying to escape the conditions of poverty, starvation, disease, and death that had stricken Ireland. Due to the enormity of their numbers and the late date of their arrival, these immigrants primarily became hired laborers instead of homesteading settlers like their predecessors. An exhaustive search of immigration and passenger lists has revealed many Irish immigrants North America bearing the name Dunagan:
Dunagan Settlers in United States in the 19th Century
Dunagan Settlers in United States in the 20th Century