Thaddaeus vs Thelonious

Baby Name Comparison — 2026

Thaddaeus

Boy #5,721 Most Popular 3 Syllables

"heart, courageous heart"

Origin: Aramaic

Christian English Greek Latin

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Boy #5,754 Most Popular 4 Syllables

"lord, ruler"

Origin: Germanic/Latin

American English African American

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Thaddaeus Rank #5,721

Thelonious Rank #5,754

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

Is Thaddaeus or Thelonious more popular?

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

What do Thaddaeus and Thelonious mean?

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

Are Thaddaeus and Thelonious boy or girl names?

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