Family History and Genealogy Resources by Surname
Sheppy Surname Origin
(Locality). From an island in the county of Kent, so called from the Saxon Sceap-Ea, or Sceap-Ige, that is, the Sheep's Isle, because sheep abundantly multiplied there; called also Ovini, from the Latin ovis, a sheep.
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.
Sheppy Surname Meaning and Family Facts
There is more to Sheppy family history than the origin of your surname:
A Sheppy Family History Thought:
'If you would not be forgotten,
As soon as you are dead and rotten,
Either write things worthy of reading,
Or do things worthy of writing.' --Benjamin Franklin, May 1738