Dugan
/ˈduːɡən/noun
Dugan is an Irish surname, an Anglicized form of Ó Dubhagáin.
Did you know?Dugan comes from an Irish patronymic formula meaning “descendant of,” so the name originally preserved an ancestor’s identifying nickname rather than a modern family label.
Etymological Timeline
Proto-Indo-European
PIE
*dʰewbʰós
“Deep or dark; the ancient root associated with depth and darkness”
Proto-Celtic
Proto-Celtic
*dubus
“Dark or black”
Early Irish
Old Irish
dubh
“Black, dark, or dark-haired”
Medieval Irish
Irish
Dubhagán
“A diminutive personal name meaning “little dark one””
Medieval Irish
Irish
Ó Dubhagáin
“Descendant of Dubhagán”
Modern English
English
Dugan
“The Anglicized surname derived from Ó Dubhagáin”