Thelonious vs Killiam

Baby Name Comparison — 2026

Thelonious

Boy #5,754 Most Popular 4 Syllables

Meaning

"lord, ruler"

Origin: Germanic/Latin

Cultural Roots

American English African American

Quick Stats

Popularity Rank: #5,754
Total SSA Count: 16
Syllables: 4
Formality: Formal

Playground Safety Score

✓ All Clear

Similar Names

Xzavien Mehki Iris Grantley

Full profile for Thelonious →

Killiam

Boy #5,792 Most Popular 3 Syllables

Meaning

"little churchman, associated with the church"

Origin: Old Irish ceall + diminutive

Cultural Roots

Irish American

Quick Stats

Popularity Rank: #5,792
Total SSA Count: 16
Syllables: 3
Formality: Moderate

Playground Safety Score

✓ All Clear

Similar Names

Griffen Jeiren Baylan Kennon

Full profile for Killiam →

Popularity Comparison

Thelonious Rank #5,754

Killiam Rank #5,792

Thelonious is more popular, ranked #5754 vs #5792 for Killiam.

Frequently Asked Questions

Is Thelonious or Killiam more popular?

Thelonious is more popular, ranked #5754 compared to Killiam at #5792 in the United States.

What do Thelonious and Killiam mean?

Thelonious means "lord, ruler" (Germanic/Latin origin). Killiam means "little churchman, associated with the church" (Old Irish ceall + diminutive origin).

Are Thelonious and Killiam boy or girl names?

Thelonious is primarily a boy name. Killiam is primarily a boy name.

More Comparisons

Killiam vs Thelonious Thelonious vs Xzavien Thelonious vs Mehki Thelonious vs Iris Thelonious vs Grantley

← Full profile: Thelonious ← Full profile: Killiam Browse all baby names