Dr'll's tribe (his mother's tribe) is actually a small tribe from the ocean coast south of Lake Arna. His dad's tribe is from the larger tribe of Lake Arna proper. Dr'll moved to the Wylds out of curiosity since he knew little about the lands northwest of Lake Arna then he kinda stayed there. So you don't have to worry about an Itore tribe being there, just Dr'll who mainly sticks to the northern end of the lake in the Wylds (it needs a name).