The information I have is Greenberry's first wife was Hannah Helton. Married 1833 They had eight children:
John Franklin 1837
Mary Ann (Polly) 1839
Sarah Elizabeth 1847
Mary Martha (Polly) Horton was his second wife. Somewhere I think I remember someone said he might have had a 3rd or 4th marriage.
So guess that means we are not related :-(.
Hope that helps.