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Dillion

Boy #5680 most popular
Irish Welsh American English

Meanings & Origins

"faithful, loyal"

Origin: Old Irish Dallán Language: Irish

"like a lion, of Leon"

Origin: Old French de Leon Language: French

Popularity

#5680
Current Rank
Stable
Trend
3
Syllables

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“An Irish classic meaning loyal as a lion with rugged American appeal”

Origin & Etymology

Dillion is a variant spelling of Dillon, which derives from the Old Irish 'Dallán' (meaning 'faithful' or 'loyal') or from the Old French 'de Leon' (of Lion). It became an Irish surname and later a given name with wide appeal. The Welsh name Dylan (meaning 'son of the sea') is etymologically separate but has become conflated with Dillon in modern use. The 'illion' spelling is an Anglicized variant that emphasizes the three-syllable pronunciation.

Popularity Story

Dillon reached peak popularity in the United States in the 1990s-2000s, fueled in part by the character James Dillon on Beverly Hills 90210 and the TV marshal Matt Dillon from Gunsmoke. The Dillion spelling is less common and gives the name a slightly distinctive appearance.

Cultural Significance

Dillon is a significant Irish surname-turned-given-name, carried by notable Irish families. In America, the name has been embraced across ethnic groups as a sturdy, approachable name with both Celtic and cowboy connotations. Bob Dylan (born Robert Zimmerman) famously chose a stage name inspired by poet Dylan Thomas, adding literary prestige.

Fun Facts

  • Bob Dylan took his stage name inspired by Welsh poet Dylan Thomas, blending two rich cultural traditions
  • Matt Dillon was the iconic US Marshal in Gunsmoke, one of TV's longest-running Western dramas (1955-1975)

Dillion in Other Languages

Irish Dallán
Welsh Dylan
French Dillon
Spanish Dillon

Popularity Over Time

Peaked 1992

Nicknames

Dil Dilly

Middle Names

James Patrick Michael Thomas Robert Connor

Name Vibe

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