Family History and Genealogy Resources by Surname
Sheridan Surname Origin
(Origin Irish) Unknown meaning, possibly someone who was elf-like, mischievous, a mischief maker.
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.
Sheridan Surname Meaning and Family Facts
There is more to Sheridan family history than the origin of your surname:
A Sheridan Family History Thought:
'The past isn't dead. It isn't even past.' --William Faulkner