Board Thread:Questions and Answers/@comment-4441214-20151123041707/@comment-1909681-20151126070312

Jolyne's name is written in katakana (It's also seemingly supposed to be Americanized) and Girono is Italian and is using an Italian name, so of course it's spelled differently. 空条仗世文 is a regular Japanese name. Jyo is just a varient spelling, but it's not used anywhere else in the series: http://www.nayuki.io/page/variations-on-japanese-romanization "Zyo" is another varient, but that's used even less often.

Passports in Japan use romanized spelling (His Japanese name is also on the passport and written normal), they just used a different varient here to make it look bureaucratic or whatever. His name clearly isn't foreign. That doesn't mean that his "intended name spelling" should use a different system than the others. Otherwise Araki would be writing it as "Jyotarou" and such. It also looks silly and makes it sound like it's pronounced really wonky in English. Almost nobody uses that romanization style for じょ.

Honestly I think the choices this wiki makes in regards to which names to use is fairly poor, so I'm not going to keep arguing this especially after how shitty I was treated last time something like this happened. And it just makes it frustrating to come here and see such absurd changes made in the name of "It feels right". Personally I think you should properly write out the syllables as "ou" or "ō" as they indicate different sounds, but that's not up to me either.