The widow of James Buchannon was Phoebe Hildreth Buchannon, daughter of Joseph Hildreth. She was born in Wythville, Va., married William Bartlett in Ky in 1818 and died in Nicholas Co. She had married #1 James Buchannon in 1792.
http://boards.ancestry.com/localities.northam.usa.states.kentucky.counties.nicholas/76.81.82.764.777/mb.ashx