Family History and Genealogy Resources by Surname
Jeffrey Surname Origin
Corrupted from Geoffrey or Godfrey, German, from God and fried, God's peace, or from Gau and fried, joyful peace. This name was borne by the chief of the royal house of Plantagenet.
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.
Jeffrey Surname Meaning and Family Facts
There is more to Jeffrey family history than the origin of your surname:
A Jeffrey Family History Thought:
'I don't know who my grandfather was; I am much more concerned to know what his grandson will be.' --Abraham Lincoln