The theory makes some sense in the current state of Game Of Thrones, although when taking into consideration that Westeros has operated under a single ruler before, it feels like a bit of a stretch compared to the first theory.
The first theory feels pretty ROCK solid, but it’s not the only one to ponder, as Clovis is also notably the name of a handful of kings from the early 500s to late 600s.
The Franks’ King Clovis I was the first to unite all the Frankish tribes together under one leader, and the thought process here seems to be that the name Clovis may tease that Gendry will be the character to somehow unite everyone back under one kingdom.