Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
CANT
As described in historical dictionaries
Patronymica Britannica (1860)
CANT. 1. Germ, kante, a corner, edge, coast — a local name radically equivalent to Kent. 2. Strong ; hearty ; lusty. Halliw.