Clan O'Dwyer

Clan O'Dwyer (Ó Dubhuir)
Noble house
Parent houseLaigin (Dál Cairbre)
CountryMunster, Ormond & Leinster, Ulster (One Branch)
Foundedc. 183 AD
FounderDubhuir mac Spealáin
Current headBy sept chief
Titles
  • Lord of (Baron) Kilnamanagh
  • Lord of Clonyhorpa
  • Lord of Drumdromy
  • Baron de Thory (France)
  • Graf (Count/Earl) O’Dwyer
MottoVirtus sola nobilitas : virtue alone enobles
Estate(s)
  • Dundrum house
  • Moyaliffe house (formerly)
  • Killenure castle (formerly)
Cadet branchesLenihan, 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.