Boy
Liam
Short for the Irish Uilliam, this name went from rare to the most popular boys' name in the U.S. within about three decades. It is having a real moment, more popular in the 2010s than ever before. These days, it is familiar to most people.
IrishResolute protector
IrishShort form of William
Births by decade
1900s
0
1910s
0
1920s
0
1930s
0
1940s
5
1950s
117
1960s
406
1970s
787
1980s
1,521
1990s
11,908
2000s
45,028
2010s
133,207
Peaked in the 2010s · 192,979 total U.S. births since 1900