If you are speaking of the same David Walker that I am.
He came from Logan County Ky abt 1833, he was married to Jane Washington, Daughter of Whiting Washington(cousin of George) and her mother was Rebecca Smith Washington. Rebecca and her sons Charles Marshal and Whiting Washington, Jr. also came to Ar abt 1836.
I am trying to obtain a copy of a book of letters published by the Washington Historical Society called the life and times of David Walker. do you know anything abt this book?