O'Dugan Surname Meaning & Coat of Arms

One surname, two spellings: O'Dugan and Dugan. Read literally, O'Dugan points to “Dark / dusky”. O'Dugan simply joins the particle O' to Dugan, a pattern common in Irish naming. Before spelling was standardised, one family could appear under several forms.

Names that sound alike, such as O'Duggan, are easily confused in old records.

Arms linked to Dugan and its spellings were granted to individual families; our heraldry team traces which line they belonged to. Get the complete O'Dugan report, with a museum-style coat of arms.