Board Thread:Manga/@comment-5774380-20190308225839/@comment-25279441-20190317021138

Tdfern14 wrote:Well in the wiki page of the Reiss family states they branched off during or after the Great Titan War. The Fritz or Ymir in particular are nonetheless the direct ancestors to Historia. They did branch off, but that isn't what changed their family name. After the Great Titan War, Karl Fritz being the head of the household decided to move his people to Paradis. There were some Eldians and some of the royal family who disagreed to this and decided to stay on the mainland. That's where they "branched off". But both those of the royal family who stayed and those who went to the island are both still part of the same Fritz family, they just effectively split into two factions. Then later the Fritz family on the island decided to go incognito and adopted the name Reiss, giving the name Fritz to their proxy king.