Alaster vs Thelonious

Baby Name Comparison — 2026

Alaster

Boy #5,903 Most Popular 3 Syllables

"defender of men, protector of mankind"

Origin: Greek via Scottish Gaelic

Scottish Irish English Celtic

✓ All Clear

Boy #5,754 Most Popular 4 Syllables

"lord, ruler"

Origin: Germanic/Latin

American English African American

✓ All Clear

Alaster Rank #5,903

Thelonious Rank #5,754

Thelonious is more popular, ranked #5754 vs #5903 for Alaster.

Is Alaster or Thelonious more popular?

Thelonious is more popular, ranked #5754 compared to Alaster at #5903 in the United States.

What do Alaster and Thelonious mean?

Alaster means "defender of men, protector of mankind" (Greek via Scottish Gaelic origin). Thelonious means "lord, ruler" (Germanic/Latin origin).

Are Alaster and Thelonious boy or girl names?

Alaster is primarily a boy name. Thelonious is primarily a boy name.