Originally posted by: TOSCHE-STATION
Yeah, and then what the heck happened to the 'Mandalorians' being defeated by the Jedi during the Clone Wars *??

(*as per the ESB script AND novel, when Boba Fett's character is 'introduced'....)

Once again, Lucas left it up to the Expanded Universe to figure this out. In the comic Jango Fett: Open Seasons, a group of Jedi battle the Mandalorians and kill all of them except for Jango who escapes. This particular part of the story is set in 34 BBY (before the battle of Yavin) which - whether coincidentally or not - is right around the time the Clone Wars were supposed to have happened in the earlier version of the prequel back story.