Llewelyn vs Theodore

Baby Name Comparison — 2026

Popularity Comparison

Llewelyn Rank #4,551
Theodore Rank #4

Theodore is more popular, ranked #4 vs #4551 for Llewelyn.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Llewelyn ___

  • Llewelyn Rhys
  • Llewelyn Owen
  • Llewelyn James
  • Llewelyn Gareth
  • Llewelyn Tudor
  • Llewelyn Evan

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 Llewelyn

Rhiannon Gwyneth Rhodri Cerys Emrys

If you choose Theodore

Olivia Charlotte Amelia Eleanor Oliver

Which Name Fits Your Family?

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1. Which style feels more like your family?

Frequently Asked Questions

Is Llewelyn or Theodore more popular?

Theodore is more popular, ranked #4 compared to Llewelyn at #4551 in the United States.

What do Llewelyn and Theodore mean?

Llewelyn means "leader, ruler" (Welsh llyw origin). Theodore means "divine gift" (Greek origin).

Are Llewelyn and Theodore boy or girl names?

Llewelyn is primarily a boy name. Theodore is primarily a boy name.

More Comparisons

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