As described in historical dictionaries

An Etymological Dictionary of Family and Christian Names (1857)

(origin: Teut.) From Rein, pure, and mund, mouth; pure mouth, one who abstains from wanton discourses. Raymund, German, quiet peace.

Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.


Patronymica Britannica (1860)

RAYMOND. An ancient Christian name — Raimundiis. It was inti'oduced at the Conquest, or soon after.

Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.


Surname type: From given name or forename

Origin: English

Region of origin: British Isles

Country of origin: England

Religion of origin: Christian

Language of origin: English

BritishSurnames.uk is a Good Stuff website.