Board Thread:Manga/@comment-5774380-20161108124943/@comment-27441457-20161110044014

Eradicate Us wrote: Just wanted to ask: Are we actually sure that the 145th Fritz King is also the 1st Reiss King? Or is that just speculation? It hasn't been explicitly stated yet, but there's strong evidence to support them being one and the same.

Chapter 64 tells us that it was the First King who raised the walls, sheltered humanity within them, and erased their memories of the world before entering the walls. This was done with the "Power of the Titans", which only the Reiss family could use.

Chapter 86 tells us that the 145th Fritz King abandoned the conflict in Eldia, moving the capital to Paradis where he raised the walls. As Eldia lost more and more territory in the subsequent Great Titan War against Marley, the King gathered the Fritz royal family and the Eldians to the walls. He was able to raise these walls with the "Founding Titan", which only the Fritz family could use.

Based on the information in these two chapters, I think it's extremely likely that not only is the 145th Fritz King also the First Reiss King, but the Fritz family must the the ancestors of the Reiss family.