The group I run for got their name from the gnome druid in the group. In order to do some work for the city they were in, they had to become an officially sanctioned adventuring company, which required them to have a name. However, the druid was the only character to show up at the government offices to fill out the necessary paperwork while the rest of the party went off to buy magic swords and what not. So the druid, a Mr. Leafy Badgerbuddy named the party Leafy's Legion, which is funny since his character is definitely not the charismatic leader type. So now whenever they're in the city the guards and other city officials refer to them as Leafy's Legion. It's a hoot. Although I was really hoping he would have gone with the name Badger's Buddies.