Dark or swarthy
Dugan is an Anglicized form of the Irish surname Ó Dubhagáin. It is derived from the Gaelic word 'dubh', which means black or dark, likely originally used as a nickname for someone with dark hair or a dark complexion.
Less common today
Dugan isn't in the latest US Top 1000. It last peaked at #3,492 in 1994.
US births per 5-year period, 1990–present (SSA data).
American actor and comedian
