Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
CHE
As described in historical dictionaries
Patronymica Britannica (1860)
LAVA CHE. Fr. "the Cow"— either a sobriquet or an inn sign. Lavash is another form of the name, which seems to have been an early importation from France. See also Levache and Koe.