Cornelius vs Theodore

Baby Name Comparison — 2026

Popularity Comparison

Cornelius Rank #2,160
Theodore Rank #4

Theodore is more popular, ranked #4 vs #2160 for Cornelius.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Cornelius ___

  • Cornelius James
  • Cornelius Edward
  • Cornelius Augustus
  • Cornelius Henry
  • Cornelius William

Theodore ___

  • Theodore James
  • Theodore William
  • Theodore Alexander
  • Theodore John
  • Theodore Henry
  • Theodore Arthur

Sibling Name Ideas

Names that pair well as siblings.

If you choose Cornelius

Octavia Maximilian Beatrix Archibald Lavinia

If you choose Theodore

Olivia Charlotte Amelia Eleanor Oliver

Which Name Fits Your Family?

Answer 3 quick questions and we'll help you decide.

1. Which style feels more like your family?

Frequently Asked Questions

Is Cornelius or Theodore more popular?

Theodore is more popular, ranked #4 compared to Cornelius at #2160 in the United States.

What do Cornelius and Theodore mean?

Cornelius means "horn, strong-willed" (Latin origin). Theodore means "divine gift" (Greek origin).

Are Cornelius and Theodore boy or girl names?

Cornelius is primarily a boy name. Theodore is primarily a boy name.

More Comparisons

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← Full profile: Cornelius ← Full profile: Theodore Browse all baby names