Cowan
A Scottish and Irish surname with more than one possible origin, often linked either to a Celtic personal name or to Gaelic forms related to smiths and other older naming traditions.
The #1,074 most common surname in the United States (2010 Census) — about 1 in every 9,475 Americans shares it.
Etymology
The surname Cowan is not securely traceable to just one root. Some 19th-century authorities treated it as a corruption of an older Celtic personal name such as Colban, while others connected it with Gaelic forms like Gobhainn, meaning 'smith.' In Irish contexts it has also been grouped with Gaelic name forms written in older spellings that later yielded Cowan in English usage.
History
The name is well established in Scotland and Ireland, with spellings shifting over time as Gaelic names were rendered into English forms. Historical surname dictionaries and Irish name studies list Cowan among names that could reflect different local developments rather than a single family origin. It remains common enough in modern English-speaking countries to have many unrelated bearer lines.
Origin
Regions
Variant spellings
Fun fact
Old surname dictionaries sometimes disagree so much about Cowan that they treat it as a local Scottish corruption in one place and an Irish Gaelic form in another.
From the historical record
“cient orthograpliy of cow. COWAN. Probably a corruption of Colban, an ancient Celtic name, since Col- banstoun in the S. of Scotl. was corrupted to Cowanstoun. COWARD. Although the popular de- rivation of this opprobrious word from "cow-herd " (wliose occupation would bere- garded with some disdain by the…”
— Patronymica Britannica: a dictionary of the family names of the United Kingdom