Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
PUTNAM
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
(origin: Dutch.) From Put or Putten, a well, and ham, a house or town. Welltown, or the house by the well.
Patronymica Britannica (1860)
PUTNAM. Puttenham, parishes in cos. Hertford and Surrey.
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