Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
IMPEY
As described in historical dictionaries
Patronymica Britannica (1860)
IMPEY. This name is, or has been, numerous in cos. Bucks, Surrey, and Essex, in which last county stands Impey Hall. See Moraut's Essex.