(Danish.) Local. From stenet, stony, rocky.
Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
STENNETT
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
(Danish.) Local. From stenet, stony, rocky.
Patronymica Britannica (1860)
STENNETT. A diminutive of Stephen.
Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.