I'm sure about Bourland's Regiment.There is "Daniel W. Byars" who shows up on the rolls of the 22nd Regiment.In both regiments, according to the info on Nat'l Park Service Civil War Soldier and Sailors System, he is listed as "Junior Second Lieutenant."
My line is through Daniel's son, William Stewart Byars.William's daughter, Willie Mae Byars (Rogan), was my grandmother.My mom is Patricia Ann Rogan (Mayfield), Mae's only child.
I don't know Willam Smoots middle name.I note that at http://www.famgen.net/schwend/fam00032.htmhttp://www.famgen.net/schwend/fam00032.htm, which has a lot of information about the Byars line, it lists him as "William Smoot" and says he died about 1863 in Ft. Smith AR.That same site also lists Amanda's info as:
Born: 14 JAN 1840at: , Polk?, Ar, USA Died: 15 MAR 1908at: South Sulphur, Hunt, Tx, USA Father:William STEWART Mother:Nancy STEWART, MRS.
I'd be interested in any futher information you have about Amanda and her line.