Show ContentsGahaghan History, Family Crest & Coats of Arms

The original Gaelic form of the Gahaghan surname is Mag Eochagain, a patronymic derived from the personal name Eochaidh.

Early Origins of the Gahaghan family

The surname Gahaghan was first found in the county of Westmeath (Irish: An Iarmhí) in the Irish Midlands, province of Leinster, in the barony of Moycashel at Kilbeggan where they held a family seat from ancient times. Traditionally, the Gahaghans are said to descend from Fiacha, son of Niall of the Nine Hostages.

Early History of the Gahaghan family

This web page shows only a small excerpt of our Gahaghan research. Another 148 words (11 lines of text) covering the years 1172, 1186, 1291, 1291, 1603, 1600, 1689, 1580, 1650, 1702, 1763, 1800 and 1749 are included under the topic Early Gahaghan History in all our PDF Extended History products and printed products wherever possible.

Gahaghan Spelling Variations

Scribes and church officials, lacking today's standardized spelling rules, recorded names by how they were pronounced. This imprecise guide often led to the misleading result of one person's name being recorded under several different spellings. Numerous spelling variations of the surname Gahaghan are preserved in documents of the family history. The various spellings of the name that were found include Geoghegan, Gagahan, Gahagan, Gahaghan, Gaghan, Gegan, MacGeoghegan, Geohan and many more.

Early Notables of the Gahaghan family (pre 1700)

Prominent amongst the family at this time was Conal MacGeoghegan (circa 1580-1650) Chief of the sept MacGeoghegan, historian who translated the Annals of Clonmacnoise; James MacGeoghegan (1702-1763) of Westmeath, an ordained priest in Paris, who wrote a "History of Ireland;" and Edward Geoghegan of Dublin was one of the most eminent surgeons of his time (early 1800s). Usher Gagahan (d. 1749), was an Irish classical scholar, belonged to a good family of Westmeath, Ireland; was educated at Trinity College, Dublin, but took...
Another 80 words (6 lines of text) are included under the topic Early Gahaghan Notables in all our PDF Extended History products and printed products wherever possible.


Australia Gahaghan migration to Australia +

Emigration to Australia followed the First Fleets of convicts, tradespeople and early settlers. Early immigrants include:

Gahaghan Settlers in Australia in the 19th Century
  • Mr. William Gahaghan, (b. 1814), aged 26, Irish soldier who was convicted in Peshawar, Pakistani for 7 years for stealing, transported aboard the "British Sovereign" on 16th December 1840, arriving in Tasmania (Van Diemen's Land) [1]


  1. Convict Records Voyages to Australia (Retrieved 30th October 2020). Retrieved from https://convictrecords.com.au/ships/british-sovereign


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