Fetty : Possibly an Americanized form of German Fette or of some other similar (like-sounding) surname.
Source : DAFN2 : Dictionary of American Family Names 2nd edition, ©2022 by Patrick Hanks and Oxford University Press
ncG1vNJzZmidnmO0prrEmqWerF6kv6h70q6pp5mdmsBwkqSNi5I%3D