An Irish surname meaning 'dark' or 'swarthy.' Also appears as a place name in various locations.
From Irish Ó Dubhsláin, meaning 'descendant of Dubhslán.' Dubhslán combines dubh (black/dark) and slán (challenge/defiance). The name evolved through Anglicization during English rule in Ireland.
The Dolan surname reflects the Gaelic tradition of descriptive naming, where physical characteristics often became family identifiers that persisted for centuries. Many Irish surnames beginning with 'Ó' were later shortened by dropping the prefix during periods when Irish identity was suppressed.
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