Ó Taidhg is an Irish Gaelic surname meaning "descendant of Tadhg." It belongs to the class of Irish patronymic surnames formed with the prefix Ó (originally Ua), meaning "grandson" or "descendant." The root name Tadhg derives from Old Irish Tadg, meaning "poet." In Irish mythology and history, Tadhg was a common name among kings and chieftains; notably, it was the name of several medieval Irish kings, including an 11th-century king of Connacht. Mythologically, Tadhg is also cited as the grandfather of Fionn mac Cumhaill, the legendary hero of the Fenian Cycle.
Historical and Cultural Context
The surname Ó Taidhg is one of many Gaelic Irish surnames that persisted after the Norman invasion and later English domination. Like other Ó surnames, it indicates a lineage group claiming descent from a common ancestor named Tadhg. The Anglicized forms of this surname include Teague, Tighe, and Mac Thaidhg. In Scotland, a parallel form appears as McCaig or MacThaoig, derived from Scottish Gaelic.
Variants and Distribution
Besides the direct Anglicized form Teague, related surnames include Tighe and Mac Thaidhg (the latter being a patrynomic with Mac meaning "son"). The surname Ó Taidhg is primarily associated with Ireland, particularly with County Galway and County Mayo. The distribution data from Forebears indicates the name's presence in Ireland but with limited global spread—typical of many distinct Gaelic surnames.
- Meaning: Descendant of Tadhg (poet)
- Origin: Irish Gaelic
- Type: Patronymic surname
- Usage regions: Ireland (chiefly Connacht)
Sources: Forebears — Ó-taidhg