Sirwilliam vs Sir

Side-by-side comparison of Sirwilliam and Sir — popularity rank, total births, peak decade, and historical trends from Social Security Administration data.

Name A

Sirwilliam

Boy name

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Name B

Sir

Boy name · Rank #1965

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Which name is more popular?

Metric Sirwilliam Sir
Current Rank Unranked #1965
Total Births (all years) 42 2,172
Peak Year 2010 2021
Peak Year Births 10 123
Peak Decade 2010ss 2010ss
Gender Boy Boy
First Recorded Year 2004 1967

Births by Decade

Decade Sirwilliam Sir
1960ss — 11
1970ss — 110
1980ss — 212
1990ss — 283
2000ss 11 384
2010ss 31 613
2020ss — 559

Recent Annual Births (2014–present)

Year Sirwilliam Sir
2014 5 58
2015 — 55
2016 5 51
2017 — 56
2018 — 111
2019 6 111
2020 — 110
2021 — 123
2022 — 96
2023 — 84
2024 — 80
2025 — 66

Data Sources

Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications — National Data, ssa.gov/oact/babynames.
Source: SSA Annual Name Rankings, 2004–2019.

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