Family History and Genealogy Resources by Surname
Monson Surname Origin
Derived, according to antiquarians, from the German word Muntz, but probably the son of Mon or Mun, a nickname for Edmund.
Source: An Etymological Dictionary of Family and Christian Names With an Essay on their Derivation and Import; Arthur, William, M.A.; New York, NY: Sheldon, Blake, Bleeker & CO., 1857.
Monson Surname Meaning and Family Facts
There is more to Monson family history than the origin of your surname:
A Monson Family History Thought:
'Those who forget their past are destined to repeat it.' --Robert A. Heinlein