Personally, I prefer the spelling "Dylan". It pays homage to one of my favourite singers, Bob Dylan, and it has a more intuitive spelling (though I've heard people pronounce Dylan as "die-lan", so perhaps I'm in the wrong here).
Dillon is the older spelling (being taken from the surname) so Dylan is the poser. My boyfriend's name is Dillon and he hates it. His sister nicknamed him Dill pickle among other things (if you think about it, you will get it). People are constantly misspelling and mispronouncing his name. The most common issue is that people try to spell it Dylan or Dillion.
GibsonGirl, Dillon and Dylan have no common root, and Dillon is not "older" than Dylan. Dillon is an Irish surname and Dylan is Welsh male given name. I guess Dylan is more legitimate as a given name if you're going by history, but many names have evolved from surnames to become given names and I don't know why people get so angry about it. Language evolves and nothing will stop it except humanity ending.
― Anonymous User 10/18/2018
5
Haha ... it has dill in it. As you, "You big dill".