Variant of Dylan, from Welsh meaning great tide or born of the sea, or from the Irish surname O'Dillain. The Dillon spelling bridges Irish and Welsh origins.
Nicknames
dill · dilly · dillan
Vibe
gentle
How it ages.
Peaked in the US in the 1990s; feels more dated than the Dylan spelling.
The cultural moment.
Common in the US from the 1980s through the 2000s; Dylan is now the dominant spelling.