NameTrendsU.S. Baby Name Data

Alphonso vs Alphonsus

Alphonso vs Alphonsus: side-by-side popularity history from official U.S. Social Security birth records.

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■ Alphonso  ■ Alphonsus

Alphonso

Total recorded births15,187
Peak year1962 (#444)
Years on the list141
10-year trend-27.4%

Alphonsus

Total recorded births454
Peak year1917 (#1291)
Years on the list51
10-year trend+183.3%

Figures are from the U.S. Social Security Administration Popular Baby Names dataset (public domain). Names with fewer than 5 recorded births in a year or state are suppressed by the source.