Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
PETHERS
As described in historical dictionaries
Patronymica Britannica (1860)
PETHER. PETHERS. Probably an ancient personal name, and its genitive ; whence also the local surnames Petherham, Pethcrbridge, and tlie names Petherick, Petherton, Petherwin, kc.