Richardson Surname OriginThe son of Richard. See Richard
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.
Richardson Surname Meaning and Family Facts
There is more to Richardson family history than the origin of your surname:
A Richardson Family History Thought:
'People will not look forward to posterity who never look backward to their ancestors.' --Edmund Burke