William vs Killiam

Baby Name Comparison — 2026

William

Boy #10 Most Popular 3 Syllables

Meaning

"resolute protector, strong-willed guardian"

Origin: Germanic

Cultural Roots

English German French

Quick Stats

Popularity Rank: #10
Total SSA Count: 10,596
Syllables: 3
Formality: Formal

Playground Safety Score

✓ All Clear

Similar Names

Enzo Declan Lucas Easton

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Killiam

Boy #5,792 Most Popular 3 Syllables

Meaning

"little churchman, associated with the church"

Origin: Old Irish ceall + diminutive

Cultural Roots

Irish American

Quick Stats

Popularity Rank: #5,792
Total SSA Count: 16
Syllables: 3
Formality: Moderate

Playground Safety Score

✓ All Clear

Similar Names

Lashawn Jayton Cayce Ashtin

Full profile for Killiam →

Popularity Comparison

William Rank #10

Killiam Rank #5,792

William is more popular, ranked #10 vs #5792 for Killiam.

Frequently Asked Questions

Is William or Killiam more popular?

William is more popular, ranked #10 compared to Killiam at #5792 in the United States.

What do William and Killiam mean?

William means "resolute protector, strong-willed guardian" (Germanic origin). Killiam means "little churchman, associated with the church" (Old Irish ceall + diminutive origin).

Are William and Killiam boy or girl names?

William is primarily a boy name. Killiam is primarily a boy name.

More Comparisons

Killiam vs William William vs Enzo William vs Declan William vs Lucas William vs Easton

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