Horgan
An Irish surname, likely from Gaelic Ó hArgáin, meaning a descendant of a personal name based on a word for “little red one” or a similar nickname form.
The #7,875 most common surname in the United States (2010 Census) — about 1 in every 73,476 Americans shares it.
Etymology
Horgan is an Irish surname. The historical forms grouped with it in older Irish surname studies point to an original Gaelic form usually written Ó hArgáin, with the first element meaning “descendant of.” The personal name behind it is commonly taken to be a nickname or diminutive based on a root associated with redness or a ruddy complexion, though early scholars did not always agree on the exact derivation. In plain terms, it is a hereditary Irish family name built from an ancestor’s personal name.
History
The surname is especially associated with Ireland’s southwest, particularly Munster, and it appears in older Irish genealogical and surname surveys from counties such as Kerry, Cork, and nearby areas. In English-language records, spellings were often regularized as Horgan, while related or nearby forms such as Horrigan, Harrigan, Horan, and Horahan were treated as part of the same broader cluster in some sources. The name is well established in modern Ireland and among Irish diaspora communities.
Origin
Regions
Variant spellings
Fun fact
Older surname compilers often grouped Horgan with a whole family of similar Irish names, which is why related spellings can look surprisingly interchangeable in historical indexes.
From the historical record
“^Ki-'^Miyr^/^icybonie and Mar. garet Horgan : Buniagc Lie. (London). ' " .?"*?;*<?■ riibbonC ClaokBon, Clack.— (i) Vari-”
— A Dictionary of English and Welsh Surnames, with special American instances