Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
ORPEN
As described in historical dictionaries
Patronymica Britannica (1860)
ORPEN. "The family of Orpen or Erpen is of remote antiquity, and is stated to be derived from Erpen, a French noble of royal descent." Such is the statement in B.L.G., though the pedigree, as there given, does not go further back than the XVI. cent.
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English