As described in historical dictionaries

Patronymica Britannica (1860)

MERTENS. Of Flemish origin. This name, or more correctly Melirtens, is not imcommon in Belgium.

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


Region of origin: Europe

Country of origin: Germany

Language of origin: German

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