Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
BRIMMER
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
From the Anglo-Saxon Bremman, Breme, or Brim, to extend, to amplify to the utmost limits; to be violent, furious, to rage; a violent, bold, furious man; "Foughten breme," that is, "He fought furiously." Bremmer, a native of Bremen, Germany.