Siar vs Wiliam

Baby Name Comparison — 2026

Siar

Boy #6,591 Most Popular 1 Syllable

Meaning

"westward, to the west"

Origin: Irish Gaelic

Cultural Roots

Irish Scottish Celtic

Quick Stats

Popularity Rank
#6,591
Total SSA Count
13
Syllables
1
Formality
Moderate

Playground Safety Score

✓ All Clear
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Wiliam

Boy #6,634 Most Popular 3 Syllables

Meaning

"resolute protector, determined guardian"

Origin: Old High German Willahelm

Cultural Roots

English American French German Irish

Quick Stats

Popularity Rank
#6,634
Total SSA Count
13
Syllables
3
Formality
Formal
Nicknames
Will, Willie, Bill

Playground Safety Score

✓ All Clear
Full profile for Wiliam →

Popularity Comparison

Siar Rank #6,591
Wiliam Rank #6,634

Siar is more popular, ranked #6591 vs #6634 for Wiliam.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Siar ___

  • Siar James
  • Siar Patrick
  • Siar Finn
  • Siar Eoin
  • Siar Cormac
  • Siar Oisín

Wiliam ___

  • Wiliam James
  • Wiliam Thomas
  • Wiliam Henry
  • Wiliam Alexander
  • Wiliam Joseph
  • Wiliam Edward

Sibling Name Ideas

Names that pair well as siblings.

If you choose Siar

Ciar Fionn Aoife Niamh Rónán

If you choose Wiliam

Henry George Charlotte Eleanor Catherine

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 Siar or Wiliam more popular?

Siar is more popular, ranked #6591 compared to Wiliam at #6634 in the United States.

What do Siar and Wiliam mean?

Siar means "westward, to the west" (Irish Gaelic origin). Wiliam means "resolute protector, determined guardian" (Old High German Willahelm origin).

Are Siar and Wiliam boy or girl names?

Siar is primarily a boy name. Wiliam is primarily a boy name.

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← Full profile: Siar ← Full profile: Wiliam Browse all baby names