Holy Kingdom of Iris -> Halidom of Ylisse: I can dig it, but I wonder how many people will have to look up the word Halidom.
Grego -> Gregor: I kind of expected this to happen, overall not a huge change.
Olivia: Stayed the same and I alright with that, it's a good name.
Nono -> Nomi: Interesting name change that's for sure, this one kind of hit me out of nowhere.
Richt -> Ricken: Like Grego I expected something along these lines and I like it.
Sariya -> Tharja: This one was one I also did not expect, I believe the "h" is silent though so I think it would be pronounced more like Tar-i-ya (don't quote me on that though). Overall I like this one as well.