Aloysius vs Theodore

Baby Name Comparison — 2026

Aloysius

Boy #4,779 Most Popular 4 Syllables

Meaning

"famous warrior"

Origin: Germanic via Latin

Cultural Roots

English Catholic Irish German

Quick Stats

Popularity Rank
#4,779
Total SSA Count
21
Syllables
4
Formality
Formal
Nicknames
Al, Aloys, Lou

Playground Safety Score

✓ All Clear
Full profile for Aloysius →

Popularity Comparison

Aloysius Rank #4,779
Theodore Rank #4

Theodore is more popular, ranked #4 vs #4779 for Aloysius.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Aloysius ___

  • Aloysius Francis
  • Aloysius James
  • Aloysius Joseph
  • Aloysius Michael
  • Aloysius Patrick
  • Aloysius Thomas

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 Aloysius

Ignatius Cornelius Beatrice Cecilia Edmund

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 Aloysius or Theodore more popular?

Theodore is more popular, ranked #4 compared to Aloysius at #4779 in the United States.

What do Aloysius and Theodore mean?

Aloysius means "famous warrior" (Germanic via Latin origin). Theodore means "divine gift" (Greek origin).

Are Aloysius and Theodore boy or girl names?

Aloysius is primarily a boy name. Theodore is primarily a boy name.

More Comparisons

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