The surname Cuolahan comes from two different old Irish septs, the Mac Uallachain and the Ó Culachain. The Mac Uallachain sept has been prominent in the parish of Lusmagh in the barony of Garrycastle in County Offaly, and sometimes were lords of the neighboring part of County Galway once known as Sil Anmchadha. The Ó Culachain sept belonged to the Hy Fiachrach group around Carra in County Mayo. 1
Loading...
Early Origins of the Cuolahan family
The surname Cuolahan was first found in Counties Offaly, Galway, and Mayo. In County Mayo, Diarmid Ó Culachain (b.1221) was a professor of history and the scribe of the mass-books of Knock and Aghagower.
Loading...
Early History of the Cuolahan family
This web page shows only a small excerpt of our Cuolahan research. The year 1617 is included under the topic Early Cuolahan History in all our PDF Extended History products and printed products wherever possible.
Cuolahan Spelling Variations
Spelling variations of this family name include: Cuolahan, Coolahan, Coolihan, Coolehan, Coulehan, Coolican, Cuolaghan, Ó Cuolahan, Mac Cuolahan and many more.
Early Notables of the Cuolahan family
Another 35 words (2 lines of text) are included under the topic Early Cuolahan Notables in all our PDF Extended History products and printed products wherever possible.
Cuolahan migration to the United States
+
Some of the first settlers of this family name were:
Cuolahan Settlers in United States in the 19th Century
John Cuolahan, who took the Oath of Allegiance in Philadelphia, Pennsylvania in 1855
Cuolahan migration to the United States 
Ireland
