Sherry, your query probably relates to one of the daughters of Thomas Adney, the first of the Adneys to come to America. According to the research of Edwin Tappan Adney in the early 1900s, Thomas Adney and Elizabeth Dunn had a number of children, but the exact dates of birth are unknown, so he listed the boys first and then the girls. No. 7 on his original list is the following: "Mary (Polly) married William (?) Richardson or Richerson, removed to Crab Orchard, Kentucky, where John Adney in 1804-6 on way to Ohio stopped to help erect buildings. Nothing further known, except that about the year 1867 after Henry H. Adney (brother of Col. Wm. H. G.) met at North Star, then called Scott's Landing, on the Missouri River, an old lady, Mrs. Scott, who was born Richerson, who remembered as a small child Adney relatives stopping at Crab Orchard. Her eldest son had been a colonel in the Confederate army and member of the Texas legislature [ETA note: only 'Scott' this period P. R. Scott, rep. distr. that includ. town of Jefferson 13th legislature--Texas Hist. Soc. pubs.] A son, William Richerson, [was] known as 'cousin' to Jonathan and his brother John L. Adney of Ohio."
What information do you have leading to your query?
The original Thomas lived in the Cape Fear, North Carolina area, then removed to western Virginia, to "Adney's Gap", now a milepost (#136) on the Blue Ridge Parkway. His children went west from there to various places such as Ohio, Indiana, Wisconsin, Tennessee, and Arkansas--and, of course, Kentucky.
Based on your information, and if we are talking about the same people, William and Mary Richardson must have returned to Virginia from Kentucky shortly after the visit by John Adney, if they had a son, Byrd Richardson, born in Virginia in 1808.
I am in the process of putting E. Tappan Adney's genealogical research on the Adney family into the computer, and hope to post the web version of at least some of it very soon.