Aaron SMIRL was the son of William SMIRL and Abigail ALEXANDER who were married on 20 May 1800 in Pendleton Co., KY.You can see information on the SMIRL family at my site: http://home.netcom.com/~fzsaund/smirl.htmlhttp://home.netcom.com/~fzsaund/smirl.html
For a source showing Aaron was the son of William, see Jefferson Co., MO Deeds A:715.
The one question I don't know the answer to is if Aaron SMIRL's wife Sarah STEWART was some type of cousin.Note that William SMIRL had sisters Jane who married John STUARD/STUART/STEWART and Martha who married James STEWART/STUART.
The children of Jane and husband John STUART are known from his estate file (see #10 at above site), and no Sarah/Sally was listed. The children of James STEWART and wife Martha SMIRL are unknown.