Llewellyn vs Theodore

Baby Name Comparison — 2026

Popularity Comparison

Llewellyn Rank #6,540
Theodore Rank #4

Theodore is more popular, ranked #4 vs #6540 for Llewellyn.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Llewellyn ___

  • Llewellyn Arthur
  • Llewellyn Rhys
  • Llewellyn Morgan
  • Llewellyn Emrys
  • Llewellyn Hugh

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 Llewellyn

Rhiannon Owain Branwen Gareth Seren

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 Llewellyn or Theodore more popular?

Theodore is more popular, ranked #4 compared to Llewellyn at #6540 in the United States.

What do Llewellyn and Theodore mean?

Llewellyn means "lion-like" (Welsh origin). Theodore means "divine gift" (Greek origin).

Are Llewellyn and Theodore boy or girl names?

Llewellyn is primarily a boy name. Theodore is primarily a boy name.

More Comparisons

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