Weimer
A German surname that may point to the place name Weimar or to an older personal name source.
The #4,410 most common surname in the United States (2010 Census) — about 1 in every 38,353 Americans shares it.
Etymology
This surname is most likely German. The historical sources you provided link Weimer with Weimar and related forms, which suggests a locational surname for someone from the town of Weimar or from a place-name base of that type. Some older onomastic works also treat it as going back to an old personal-name form, so the exact origin is not completely settled.
History
The name is found in German-speaking areas and later in immigrant communities abroad, especially in the United States. The spelling Weimer is a stabilized modern form, alongside close variants such as Weimar and the shortened/altered forms noted in older surname studies. Because the early scholarship is not unanimous, the surname is best treated as having a German place-name or personal-name background rather than a single certain derivation.
Origin
Regions
Variant spellings
Fun fact
The same spelling pattern appears in historical surname lists alongside Weimar, hinting that some families may have been tied to the famous Thuringian city name.
From the historical record
“Wek- s. 1) Wid (V.) 2) Wig (einst. K.). Wehl s. Wil. Weimer s. Wan. Wehr- s. War (V., einst. K.). Wehrenbold, -brecht s. Warin (V.). Wehrenpfennig ÜI. Satz-N. ,, wahre den Pfennig*', ein Pfennigfuchser; vgl. Hüde- pennig (Bremer WB.).”
— Die deutschen Familiennamen