Thelonious vs Thaddaeus

Baby Name Comparison — 2026

Thelonious

Boy #5,754 Most Popular 4 Syllables

"lord, ruler"

Origin: Germanic/Latin

American English African American

✓ All Clear

Boy #5,721 Most Popular 3 Syllables

"heart, courageous heart"

Origin: Aramaic

Christian English Greek Latin

✓ All Clear

Thelonious Rank #5,754

Thaddaeus Rank #5,721

Thaddaeus is more popular, ranked #5721 vs #5754 for Thelonious.

Is Thelonious or Thaddaeus more popular?

Thaddaeus is more popular, ranked #5721 compared to Thelonious at #5754 in the United States.

What do Thelonious and Thaddaeus mean?

Thelonious means "lord, ruler" (Germanic/Latin origin). Thaddaeus means "heart, courageous heart" (Aramaic origin).

Are Thelonious and Thaddaeus boy or girl names?

Thelonious is primarily a boy name. Thaddaeus is primarily a boy name.