Where Does the O'Duggan Surname Come From?

Many O'Duggan families will find their roots under Duggan, the form most records use. At root, the name means “Descendant of Dubhagán ("little dark one")”.

• With its O' prefix, O'Duggan keeps Duggan intact and marks descent in the older style.
• Related forms: Dugan and Doogan.
• Regional accents shaped spellings long before dictionaries fixed them.

Family crest and blazon

Arms linked to Duggan and its spellings were granted to individual families; our heraldry team traces which line they belonged to. Want more than a summary? See the O'Duggan family name pack.