Marcellus vs Billy

Baby Name Comparison — 2026

Marcellus

Boy #951 Most Popular 3 Syllables

"little warrior, young Mars"

Origin: Latin

English French Italian Roman German

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Boy #1,051 Most Popular 2 Syllables

"resolute protector"

Origin: Old German via Norman French

English American Australian Irish

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Marcellus Rank #951

Billy Rank #1,051

Marcellus is more popular, ranked #951 vs #1051 for Billy.

Is Marcellus or Billy more popular?

Marcellus is more popular, ranked #951 compared to Billy at #1051 in the United States.

What do Marcellus and Billy mean?

Marcellus means "little warrior, young Mars" (Latin origin). Billy means "resolute protector" (Old German via Norman French origin).

Are Marcellus and Billy boy or girl names?

Marcellus is primarily a boy name. Billy is primarily a boy name.