Besides WearsHats' answer "above", here's the "official" answer by Elli herself:
@rdelacy, 7 July 2019 wrote:Sat Jul 06, 2019 6:15 pmAre you going to continue to use the word “thuntonian” to describe your world, or are you eventually going to move to a new name?
@EllipsisGoblins wrote:Sun Jul 07, 2019 1:10 pmI like "Thuntonian" so much more now, because it's no longer named after me. I always felt kind of narcissistic when I used it before.