Guillermo vs Marcello

Baby Name Comparison — 2026

Guillermo

Boy #833 Most Popular 3 Syllables

Meaning

"resolute protector"

Origin: Old High German wil (will) + helm (protection)

Cultural Roots

Spanish Latin American Filipino Portuguese

Quick Stats

Popularity Rank: #833
Total SSA Count: 297
Syllables: 3
Formality: Formal

Playground Safety Score

✓ All Clear

Similar Names

Gustavo Tomas Alonso Alfredo

Full profile for Guillermo →

Marcello

Boy #1,004 Most Popular 3 Syllables

Meaning

"little warrior, young Mars"

Origin: Latin

Cultural Roots

Italian Spanish Brazilian French

Quick Stats

Popularity Rank: #1,004
Total SSA Count: 224
Syllables: 3
Formality: Formal

Playground Safety Score

✓ All Clear

Similar Names

Gio Carmine Aldo Santana

Full profile for Marcello →

Popularity Comparison

Guillermo Rank #833

Marcello Rank #1,004

Guillermo is more popular, ranked #833 vs #1004 for Marcello.

Frequently Asked Questions

Is Guillermo or Marcello more popular?

Guillermo is more popular, ranked #833 compared to Marcello at #1004 in the United States.

What do Guillermo and Marcello mean?

Guillermo means "resolute protector" (Old High German wil (will) + helm (protection) origin). Marcello means "little warrior, young Mars" (Latin origin).

Are Guillermo and Marcello boy or girl names?

Guillermo is primarily a boy name. Marcello is primarily a boy name.

More Comparisons

Marcello vs Guillermo Guillermo vs Gustavo Guillermo vs Tomas Guillermo vs Alonso Guillermo vs Alfredo

← Full profile: Guillermo ← Full profile: Marcello Browse all baby names