Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
RAPP
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
Rap, in Danish, is swift, nimble. Rap, Dutch, nimble, quick; "rap gasten," a nimble fellow.
Patronymica Britannica (1860)
RAPP. Germ, rapp quick, swift of foot.
Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English