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Marcellus vs Rex

Baby Name Comparison — 2026

Popularity Comparison

Marcellus Rank #951
Rex Rank #793

Rex is more popular, ranked #793 vs #951 for Marcellus.

Frequently Asked Questions

Is Marcellus or Rex more popular?

Rex is more popular, ranked #793 compared to Marcellus at #951 in the United States.

What do Marcellus and Rex mean?

Marcellus means "little warrior, young Mars" (Latin origin). Rex means "king" (Latin origin).

Are Marcellus and Rex boy or girl names?

Marcellus is primarily a boy name. Rex is primarily a boy name.

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