Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
INKPEN
As described in historical dictionaries
Patronymica Britannica (1860)
INKPEN. A parish near Hungcrford, CO. Berks. " The manor was licld at an earlj' period, under the baronial family of Somerj', bj' the Inlcpens, who took their name from the village." Escheats Edw. I. and II. Lysons's Berkshire, p. 304,