(SPOILERS!) So is Lothric kingdom really...

The Dukes Archive's, just built up? Its in the same area Dukes Archives would be when you stand in Anor Londo, the knights there use dragons, theres a massive library archive within it, Oceiros apparently found Seath's work inside, theres tons of Crystal spell stuff and theres a lot of dragon related stuff. I feel like Anor Londo crumbled over a long, long time, and people moved instead to the Dukes Archive's and built it up into a kingdom. Thoughts?