I am related to William Delaney through his sister Avarma Amanda Delaney Sparks.
I have done much research in Monroe County, MO. Marriage records of Monroe County, Mo. show that Hutchins Barnett married Mary Delaney on 29 March 1838.
I have seen both Mary Griffith and Nancy Sullivan listed as a spouse of Harris Patrick Delaney. Since I have not researched in Scott County, KY, I can't verify which is correct but the marriage of Hutchins Barnett to Mary Delaney suggest that Mary Griffith may be correct.