The Horton family history stored at at http://www.robinrichmond.com/family/hortonhistory.htm tells the story of the migration of Azre Horton and his children from Mississippi and Alabama via Tennessee to Texas.   Almost all of his children lived in Quanah, Texas for a while, and three lived out their lives there, so Quanah became a home base for the Horton clan.

The document also touches on the confusion over Azre's name and origins.