Guillaume comes from the French tradition, meaning William: resolute protector, strong-willed..
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How popular is Guillaume?
1997peak year
Guillaume has an uneven popularity history in U.S. records. It currently ranks well outside the top 1,000 (around #12123), with about 6 babies named Guillaume each year. In 1997, 19 babies received the name (ranked #3648). Total registrations across all years since 1880: roughly 341.
Year-by-year registrations1880–2024 · U.S. Social Security data
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