I think it's because Sephiran is asking for his name beforehand.
Sephiran: The depth of your feelings... Might I ask your name?
Sothe: Sothe. Now if you want to stand in our way, I'm prepared to cut you down.
There was one in Eirika and Seth's B support, there was one in either the FE8 or FE7 Axe section (it said, "HandAxe"), and there were a lot in the FE7 support section. Also, Zoldam isn't the boss of chapter 19 Hector (Boss Data) and Wire isn't the boss of chapter 10 Hector (Boss convos).
That's all I can think of for now.
Oh yeah, you don't need to mention details that were lost from the original thread, since I updated the mainsite back to the current date. So I think all of those had already been fixed before you posted them now. If not, feel free to mention it to me again ^^
I'll fix the Holsety mistake as well. I must have read that 5 as a 3 somehow.