Given the conflicting claims as to Rebecca (Anderson) Hash's parents, the Rebecca (Anderson) who married John might not be a Horton and in fact, might not even be Rebecca's mom. The other possibility, which is listed on findagrave.com, is that Rebecca was the daughter of Paul Jacob Anderson and Susannah, whose last name is unknown, but thought to be Buchanan.
The myth goes that Old John Hash first married Rebecca Anderson, whose parents are disputed. It is only a myth that's been passed down. The name of Old John Hash's first wife is still unknown, but facts show her name was not and never was Rebecca Anderson. John H. Hash, however, did marry a Rebecca Anderson. John H. was the brother of William Horton Hash, Sr.