Hamlets
Hamlets are little more than settled tribes with slightly more permanent buildings - plastered wood or stone instead of thick cloth tents. They most often form near a natural resource, a crossroad, a river or near a newly established Manor.
The survival of a hamlet can be a tricky thing from year to year, as the settlement is small, vulnerable to enemies and predators, and even the weather can be a fatal enemy when the hamlet is still trying to establish itself, so their presence may not be something you can depend on from year to year.