Brennan vs Theodore

Baby Name Comparison — 2026

Brennan

Boy #1,058 Most Popular 2 Syllables

Meaning

"descendant of Braonán, tearful one"

Origin: Irish Gaelic

Cultural Roots

Irish American Scottish

Quick Stats

Popularity Rank
#1,058
Total SSA Count
207
Syllables
2
Formality
Moderate
Nicknames
Bren, Benny

Playground Safety Score

✓ All Clear
Full profile for Brennan →

Popularity Comparison

Brennan Rank #1,058
Theodore Rank #4

Theodore is more popular, ranked #4 vs #1058 for Brennan.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Brennan ___

  • Brennan Patrick
  • Brennan James
  • Brennan Michael
  • Brennan Thomas
  • Brennan Sean
  • Brennan Finn

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 Brennan

Declan Ronan Callum Fionn Niamh

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 Brennan or Theodore more popular?

Theodore is more popular, ranked #4 compared to Brennan at #1058 in the United States.

What do Brennan and Theodore mean?

Brennan means "descendant of Braonán, tearful one" (Irish Gaelic origin). Theodore means "divine gift" (Greek origin).

Are Brennan and Theodore boy or girl names?

Brennan is primarily a boy name. Theodore is primarily a boy name.

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