<Tr> <Th_colspan="2"> Other names </Th> </Tr> <Tr> <Th> Variant (s) </Th> <Td> Dunn, O'Dunne, O'Dunn </Td> </Tr> <P> Dunne is an Irish surname, derived from the Irish Ó Duinn and Ó Doinn, meaning "dark" or "brown ." The name Dunne in Ireland is derived from the Ó Duinn and the Ó Doinn Gaelic Septs who were based in County Laois and County Wicklow . These septs in turn are descendants of the O'Regan noble family . It is in these Counties that the majority of descendants can still be found . Hundreds of years ago, the Gaelic name used by the Dunn family in Ireland was Ó Duinn or Ó Doinn . Both Gaelic names are derived from the Gaelic word donn, which means brown . Ó Doinn is the genitive case of donn . First found in county Meath, where they held a family seat from very ancient times . Variations: Dunn, Dunne, Dun, Duen, O'Dunne, O'Doyne, Doine, Doin, O'Dunn . </P> <P> The Dunnes formerly owned a number of castles in the midlands of Ireland . Today little remains of most of these castles, many were destroyed during the Cromwellian Invasion of Ireland . </P>

Where does the last name dunne come from
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