Geohagen is used as a family name or surname in Ireland. It is 8 characters long in length.
Variation of the Geoghegan. The son of little Eochaidh meaning "racing horse".
The lastname Geohagen is form of the Gaughan. Descendant of little Gaibhteach meaning "plaintive".
The variant form of Geoghegan. The sept claim descent from Fiachra, one of the sons of Nial of the Nine Hostages, monarch of Ireland in the fifth century. Their territory was called Kinel-Fiacha, and extended over the tract now called the barony of Moycashel, with parts of those of Moyashell, Rathcourath, and Fertullagh, in Westmeath, within which they erected various castles, the chief being at Castle-town-Geoghegan near Kil beggan, whose wide site is marked on the Ordnance Survey.