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Where did the Irish Callahan family come from? What is the Irish Callahan family crest and coat of arms? When did the Callahan family first arrive in the United States? Where did the various branches of the family go? What is the Callahan family history?Before Irish names were translated into English, Callahan had a Gaelic form of O Ceallachain, possibly from "ceallach", which means "strife". The family is descended from Ceallachan (Callaghan), the 10th century King of Munster from whom their surname is derived, and as such, the name Callahan is a patronymic name.
One explanation for the many variations is that scribes and church officials frequently spelled the name as it sounded: an imprecise method at best. Understandably then, various spellings of the surname Callahan were found in the many archives researched. These included Callaghan, Callahan, O'Callaghan, O'Callahan, Calahan, Cellaghan, Kalahan, Kallaghan, Kallahan, O'Kallaghan, Kellaghan, Kelleghan, Kellahan, Kelahan, Ceilahan, Ceilaghan, Callachan, Calachan, Callagan, Calagan, Kelagan, Callighan and many more.
First found in Munster. The earliest mention of the name Callahan placed them in the barony of Kinlea, in County Cork, yet the family lost most of their original lands in the barony of Kinelea during the Anglo- Norman Conquest under Strongbow. They relocated to an area near Mallow, in the north of the county, and remained there until forced off their lands once again during the Cromwellian Invasion of the 17th century. The head family migrated to the east of County Clare and flourished, giving their name to the village of Callaghan's Mills. The resumption of the often-discarded prefix "O" has been widespread during the late twentieth century, but in the early twentieth century, Callaghans greatly outnumbered O'Callaghans, but such is no longer the case. The O'Callaghans are one of the few Irish families to still have a chief, certified by the Genealogical Office. 
This web page shows only a small excerpt of our Callahan research. Another 403 words(29 lines of text) covering the years 1172, 1640, 1738, 1807, 1797, 1883, 1605, 1654, 1839 and 1909 are included under the topic Early Callahan History in all our PDF Extended History products.
Another 53 words(4 lines of text) are included under the topic Early Callahan Notables in all our PDF Extended History products.
Suffering from poverty and racial discrimination, thousands of Irish families left the island in the 19th century for North America aboard cramped passenger ships. The early migrants became settlers of small tracts of land, and those that came later were often employed in the new cities or transitional work camps. The largest influx of Irish settlers occurred with Great Potato Famine during the late 1840s. Although the immigrants from this period were often maligned when they arrived in the United States, they provided the cheap labor that was necessary for the development of that country as an industrial power. Early immigration and passenger lists have revealed many immigrants bearing the name Callahan:
Callahan Settlers in United States in the 17th Century
Callahan Settlers in United States in the 18th Century
Callahan Settlers in United States in the 19th Century
Callahan Settlers in United States in the 20th Century
Callahan Settlers in Canada in the 18th Century
Callahan Settlers in Canada in the 19th Century
Callahan Settlers in Australia in the 19th Century
The Callahan Family Crest was acquired from the Houseofnames.com archives. The Callahan Family Crest was drawn according to heraldic standards based on published blazons. We generally include the oldest published family crest once associated with each surname.
This page was last modified on 18 February 2015 at 13:15.
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