From what I have been able to find, there was some information at 2 places:
1. Saunders of Pentre, Tymawr, and Glanrhydw. little c in a circle Historical Society of West Whales Transactions Volume II, 1913 pages 161-188 (929.3429) international classification code) Saunders of Petre, Tymawr, and Glanrhydw. By Francis Green.
2. (from http://ackshunjackson.com/nameorigin.html):
THE ORIGINS OF THE SANDERS IN
SUSSEX AND SURREY, ENGLAND
The family of de SAUNDRE, SAUNDERS, SANDERS, and SANDARS is of very ancient descent, most probably of Saxon or Scottish origin. Historians claim the surname is the medieval form of the given name Alexander (Alisaundre) meaning “helper of mankind” and gained initial popularity in honor of Alexander the Great.
When the Normans began using the name Alisaundre in England it rapidly became shortened to Saunders and Sanders. Eventually these two names became surnames rather than given names. “It has been stated by some genealogists that the ancestor of the Sa(u)nders family came over to England in the train of William the Conqueror, and it is quite possible that this may be true, although there is no mention of his name in the Rolls of Battle Abbey. But however this may have been, the Saunders were in the county of Surrey at a very early date, and according to Brayley’s Topographical History of Surrey, Vol. iv., p. 266, they were settled at Charlwood in that county in the reign of Edward II and before that time held an estate at Sanderstead in the same county.
I hope this helps.
