Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
TESTER
As described in historical dictionaries
Patronymica Britannica (1860)
TESTER. This word has several distinct meanings. As a surname it is probably derived from the baptis)nal Testard, which is found in a Pipe Roll of the year 1131. Hozier. Ann. de la France, deduces it from Guillaurue " Teste-hardie," Duke of Burgundy, early in the XI. century. Testard. H.R.
Surname type: Occupational name
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English