Guillermo vs Brendon
Guillermo leads today (#901 vs #2,676), though both are past their peak.
145 years, head to head
Babies named Guillermo and Brendon per year in U.S. Social Security records, 1880–2025.
Head to head
2025 rank
#901
#2,676
Babies named in 2025
264
48
Peak year
1996
1998
Trend
Declining since 1997
Declining since 1998
Usually for
Boys
Boys
Lifetime births
32,074
20,081
Try another matchup
Guillermo against names whose popularity has moved like its own.