It is fun to see the difference between english and french names. The pronounciation isn't even close for Theuderic --> Thierry, Odo --> Eudes, Rudolph --> Raoul...
Because most of the Merovingians divided their kingdoms among their sons. So there was a King I and II but they were never kings of France (perhaps of Austrasia or other territories)
fun fact : John II was called "The Good" and in French it makes : Jean le Bon, and a common (not funny) pun with it is Jean-Bon (jambon) which means "ham".
Now btw you know how to pronounce Jean (like "jam" in "jambon")
https://en.wikipedia.org/wiki/Louis_Philippe_I#/media/File:Les_Poires_cropped.jpg
Now btw you know how to pronounce Jean (like "jam" in "jambon")