Boy
Billy
The name Billy carries the meaning "Resolute protector", with roots in Germanic. It has not kept pace since its 1930s peak. In the current registry, it is a name most people have come across. It has appeared in U.S. birth records in nearly every decade since 1900, a genuinely long run.
GermanicDiminutive of William
GermanicResolute protector
Births by decade
1900s
253
1910s
3,263
1920s
43,213
1930s
89,416
1940s
68,428
1950s
59,735
1960s
48,944
1970s
33,935
1980s
21,012
1990s
11,067
2000s
5,697
2010s
2,608
Peaked in the 1930s · 387,571 total U.S. births since 1900