What does Thady mean?
Thady is an uncommonly occurring first name for males. Thady is an equally unusual surname for all people. (2000 U.S. Census)
Prominent variation forms of Thady (#unlisted) listed in the Top 1000 are Thaddeus (#732 a year ago), Thad and Tad. These boy names were at the height of their popularity during the years 1970-1979 (usage of 0.421%) and are now significantly less popular (usage 0.0893%, down 78.8%), with the versions Tad, Thad and Thaddeus becoming less stylish. Below is a graphed comparison of the usage of Thady and corresponding names. (2014 Birth Statistics)