Clan O'Dwyer
| Clan O'Dwyer (Ó Dubhuir) Noble house | |
|---|---|
| Parent house | Laigin (Dál Cairbre) |
| Country | Munster, Ormond & Leinster, Ulster (One Branch) |
| Founded | c. 183 AD |
| Founder | Dubhuir mac Spealáin |
| Current head | By sept chief |
| Titles |
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| Motto | Virtus sola nobilitas : virtue alone enobles |
| Estate(s) |
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| Cadet branches | Lenihan, Hayden, O'Dwyer of Ulster |
O'Dwyer (Irish: Ó Dubhuir), also known as Dwyer, Dyer is one of Ireland's oldest Gaelic noble or aristocratic houses, based most prominently in what is today County Tipperary. The name means "dark coloured", in reference to their progenitor Dubhuir mac Spealáin's hair colour.