Family History and Genealogy Resources by Surname
Hatfield Surname Origin
(Locality). From a town in Hertfordshire, also in Essex and Yorkshire, England. Bailey says it is from Hat, hot, Saxon, and field--from the hot sandy soil. Houtfield, the field in the wood, from hout, Dutch, a wood. Perhaps the same as Heathfield.
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.
Hatfield Surname Meaning and Family Facts
There is more to Hatfield family history than the origin of your surname:
A Hatfield 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