Sullivan vs Frederick

Baby Name Comparison — 2026

Sullivan

Boy #340 Most Popular 3 Syllables

"descendant of the dark one"

Origin: Irish Gaelic

Irish American English

✓ All Clear

Boy #424 Most Popular 3 Syllables

"peaceful ruler"

Origin: Germanic

English German Scandinavian French American

8 High Risk

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Sullivan Rank #340

Frederick Rank #424

Sullivan is more popular, ranked #340 vs #424 for Frederick.

Is Sullivan or Frederick more popular?

Sullivan is more popular, ranked #340 compared to Frederick at #424 in the United States.

What do Sullivan and Frederick mean?

Sullivan means "descendant of the dark one" (Irish Gaelic origin). Frederick means "peaceful ruler" (Germanic origin).

Are Sullivan and Frederick boy or girl names?

Sullivan is primarily a boy name. Frederick is primarily a boy name.