Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
SUMMER
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
So called, probably, from the season summer. The word is derived from the Saxon Sumer; Celtic or Gaelic, samh, the sun. Summer, one who casts up an account. The name may be a corruption of Sumner.
Patronymica Britannica (1860)
SUMMER. See Times and Seasons.
Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English