I have a collection of Maxwell information. My wife's grandfather was Hedrick M. Maxwell.
His line was Hedrick<William O.<William Stephen<William.
William Stephen Maxwell moved his family from Jackson Co, AL to Falls County, TX in 1874.
His father, William was s/o John William (II)< John William (I).
John William (I) was born in Ireland.
So the geographic progression was Ireland>Carolinas>Tennessee>Alabama>Texas.