Thread:TRon69-SAO/@comment-6697950-20140801112810/@comment-6697950-20140801120756

Diavel's name isn't supposed to be based on the main Italian dialect. It's supposed to be based on a less known dialect of Italian. Either way, it doesn't really matter where the name comes from. What's important for a wiki is fact accuracy. All names in Sword Art Online are written in alphabet, thus a specific spelling exists for each name.

This wiki's policy is to use the spelling that the author intended for accuracy. How your wiki does it is your own concern, I'm just doing my part in sharing information.