Eirnin vs Theodore

Baby Name Comparison — 2026

Eirnin

Boy #34,696 Most Popular 2 Syllables

Meaning

"little iron one, iron-hearted"

Origin: Old Irish iarn + -ín

Cultural Roots

Irish Scottish

Quick Stats

Popularity Rank
#34,696
Total SSA Count
5
Syllables
2
Formality
Moderate
Nicknames
Ern

Playground Safety Score

✓ All Clear
Full profile for Eirnin →

Popularity Comparison

Eirnin Rank #34,696
Theodore Rank #4

Theodore is more popular, ranked #4 vs #34696 for Eirnin.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Eirnin ___

  • Eirnin Ciarán
  • Eirnin Finn
  • Eirnin Patrick
  • Eirnin James
  • Eirnin Conor
  • Eirnin Ronan

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 Eirnin

Ciarán Riordan Aoife Niamh Siobhan

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 Eirnin or Theodore more popular?

Theodore is more popular, ranked #4 compared to Eirnin at #34696 in the United States.

What do Eirnin and Theodore mean?

Eirnin means "little iron one, iron-hearted" (Old Irish iarn + -ín origin). Theodore means "divine gift" (Greek origin).

Are Eirnin and Theodore boy or girl names?

Eirnin is primarily a boy name. Theodore is primarily a boy name.

More Comparisons

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