Chalmers
A Scottish surname usually explained as a form of Chambers, ultimately meaning “of the chamber” or “chamberlain.”
The #5,637 most common surname in the United States (2010 Census) — about 1 in every 50,072 Americans shares it.
Etymology
Historical sources generally treat Chalmers as a Scottish form of Chambers. The underlying root is Latin cameraria, “the chamber,” which entered Anglo-Norman and Middle French as forms meaning a chamber or chamberlain. In Scotland the name appears to have developed as a dialectal or altered spelling of Chambers, rather than from the Gaelic clan names sometimes linked to it in older writing.
History
Writers on Scottish surnames in the 19th century often repeated a tradition that connected Chalmers with a member of Clan Cameron who Latinized his name abroad, but later Scottish-language scholarship is more cautious and prefers the Chambers derivation. The surname is long established in Scotland and is especially associated with Lowland and eastern Scottish records. It also spread to other English-speaking countries through later migration.
Origin
Regions
Variant spellings
Fun fact
Some older Scottish antiquaries argued for a clan-based origin, but later etymologists specifically rejected that explanation and tied the name back to Chambers instead.
From the historical record
“years in Challoner. CHALMERS or CHAMBERS. One of the clan Cameron of Scotland, going to France, put his name in a Latin dress, as was customary in those times, styling himself De Cameraria, which was called in French, De la Chambre, and upon his return to Scotland, he was again, according to their dialect, called…”
— An Etymological Dictionary of Family and Christian Names