ROBERT Doak (ii) Born between late 1779 and 5 Aug 1780, he was in Washington County, Tennessee in 1803. With a wife named Polly, he was listed in Campbell Co, Tennessee by 1808. In 1820, "of Campbell County, Tennessee", he and his then wife, Nancy H Doak, sold a third interest in land in Jefferson County, Tennessee, inherited from Nancy's father, John Pope. Robert moved to Madison County, Arkansas with his third wife, Rachel Pharis, and then to Osage Twp, Carroll County, Arkansas, where he confused the census-takers in 1850 before dying prior to the 1860 census.
http://trees.ancestry.com/tree/63740309/person/48192699336/story/b91b1f06-a73a-4695-9f5a-69c1b029e6df?src=search