Cornelius Howard Duvall, B. 1829, son of John Duvall, b. c. 1801 in Kentucky and Malinda Baker m. 6 Feb 1825, Kentucky.She was b. 1804 daugh of Joshua Baker and Mary Calloway.m. Kentucky. John Duvall, b. c. 1801 was the son of Cornelius Howard Duvall b. 1766 Prince Georges Co., MD, d. 1837, Carroll Co., KY, m. Nancy Ann Pryor dau of Joseph Pryor and Mary Nancy Dance, m. 1788 Botetourt, VA Cornelius Howard Duvall, b. 1766 was the son of Cornelius Duvall, b. 23 Feb 1728/1729 Ann Arundel Co., MD, d.1834, Scott Co., KY.He m.his cousin, Keziah Duvall b. c. 1760 Prince Georges Co., MD Cornelius b. 1728/29 was the son of Mareen Duvall b. 14 Nov 1702, d. 1 Nov 1761 who m. Ruth Howard, and Keziah was the dau of Mareen Duvall, Jr. who m. Hester Soper.Keziah'l line came from Mareen "The Elder", and Cornelius' line came from Mareen "The Younger".Hope this helps with some of the confusion.