Rhiannon vs Theodore

Baby Name Comparison — 2026

Popularity Comparison

Rhiannon Rank #1,312
Theodore Rank #4

Theodore is more popular, ranked #4 vs #1312 for Rhiannon.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Rhiannon ___

  • Rhiannon Grace
  • Rhiannon Mae
  • Rhiannon Claire
  • Rhiannon Louise
  • Rhiannon Rose
  • Rhiannon Jane

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 Rhiannon

Gwendolyn Isolde Rowan Caius Evelyn

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 Rhiannon or Theodore more popular?

Theodore is more popular, ranked #4 compared to Rhiannon at #1312 in the United States.

What do Rhiannon and Theodore mean?

Rhiannon means "great queen, divine queen" (Celtic origin). Theodore means "divine gift" (Greek origin).

Are Rhiannon and Theodore boy or girl names?

Rhiannon is primarily a girl name. Theodore is primarily a boy name.

More Comparisons

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