Board Thread:Manga/@comment-29919227-20161011151128/@comment-27441457-20161011153403

It seems (to me at least) that before the walls were raised, the Fritz family was the royal family in charge of the Progenitor Titan. Since the 145th Fritz King who raised the walls was also the First Reiss King, to me that implies that the Reiss family IS the Fritz family, just under a different name. I think the Fritz family changed their name for their own protection and placed some other noble family on the throne under their old name, which is where the Fritz we see in the Uprising arc comes from.