What does Duffy mean?
(male) Dufeau, Dufry, ..
(female) Dufra, Dufri, .. Middle name pairings:
Duffy Thor (D.T.), ..
How popular is Duffy?
Duffy is an uncommon given name for males but a very popular last name for both adults and children (#827 out of 150436, Top 1%). (2000 U.S. Demographics)
Which version is better?with its source form and related boy names. Duff is the only popular varying form of Duffy (not ranked). This relation of Duffy reached the height of its popularity in the 1950s (#1871). Below is a charted analysis of the popularity of Duffy and corresponding names. (Top Baby Names, 2015)