Name and concept that's it.

 Within reason if the concept is good I will allow breaking of the rules for race and class combinations.  Example that suits this best is the Bouldershoulder Brothers. Because in standard AD&D dwarf druids are not a thing. Never understood that, but a good concept allows you to do that.

The exact year the game starts is -500 DR. Yeah it's a bit before most folks are used to, but this allows a great deal of flexibility in changing events if you so choose.