From Ó Gallchobhair, a Donegal name whose meaning is debated, sometimes read as ‘foreign help’.
The Gallagher certificate.
Digital €19.99 · Printed €39.99 · Framed €89.99. 20% off at checkout.
Gaelic Origin · Root name Gallchobhar
Gallagher's root, Gallchobhar, is genuinely uncertain in meaning — ‘foreign help’ (gall + cabhair) is the most commonly proposed reading, though it isn't settled. What's certain is the sept's home: Tyrconnell, modern Donegal, where they remain the county's most numerous name to this day.
A name honest enough to admit its own meaning is still argued over — while never once losing its grip on the county it came from.
Irish form: Ó Gallchobhair