Dolan
An Irish surname most often explained as meaning “descendant of the dark one” or linked to an older Gaelic personal name.
The #1,283 most common surname in the United States (2010 Census) — about 1 in every 11,297 Americans shares it.
Etymology
Dolan is an Irish surname traditionally treated as an anglicized form of Gaelic Ó Dúillín or a related Doolan/Doolin type name, with the initial element Ó meaning “descendant of.” The second element is commonly connected with a personal name or byname meaning “dark” or “swarthy,” though 19th-century writers did not always agree on the exact Gaelic form behind every spelling. In practice, Dolan belongs to the broad Irish surname family that includes Doolan, Doolin, and related spellings.
History
The name is strongly Irish in distribution and appears in historical surname lists alongside Doolan and related forms. In Irish records and later census material, Dolan is especially associated with Connacht and the northwest of Ireland, though the surname spread widely through emigration. It is common enough in modern Ireland and the Irish diaspora to be a familiar family name in the United States, Britain, Canada, and Australia.
Origin
Regions
Variant spellings
Fun fact
The surname appears in 19th-century sources as both Dolan and Doolan, showing how easily Irish names were anglicized in more than one way.
From the historical record
“480 DOLAN. [Doolan]. 246. [Dooly]. 498. [Dowling]. 350, 384. Donoughoo. [Dennis]. [ODevine].”
— Varieties and Synonymes of Surnames and Christian Names in Ireland