William vs Declan

Baby Name Comparison — 2026

William

Boy #10 Most Popular 3 Syllables

"resolute protector, strong-willed guardian"

Origin: Germanic

English German French

✓ All Clear

Boy #131 Most Popular 2 Syllables

"man of prayer"

Origin: Irish Gaelic

Irish English American

✓ All Clear

William Rank #10

Declan Rank #131

William is more popular, ranked #10 vs #131 for Declan.

Is William or Declan more popular?

William is more popular, ranked #10 compared to Declan at #131 in the United States.

What do William and Declan mean?

William means "resolute protector, strong-willed guardian" (Germanic origin). Declan means "man of prayer" (Irish Gaelic origin).

Are William and Declan boy or girl names?

William is primarily a boy name. Declan is primarily a boy name.