If your Mary (Polly) Raiborne is the daughter of Thomas S. Raiborne and Mildred Thompson, then she would have been a sister of my gggrandmother Patience Raibourne. If this is correct, the information I have for the birthdate of Mary (Polly) is 3 Jun 1817 and a death date of 5 May 1878. This information does not fit your marriage date of Polly and Jacob in 1816. Could your Polly be the daughter of my Mary (Polly)? Thomas was born 4 Sep 1786 in North Carolina; Mildred was born in 1787 in Maryland. Patience was born in 1809 in Tennesse and died in 1858 in Fayette Co., Illinois. An older brother of Patience, Mitchell T. Raibourne was born 4 Jul 1808 in North Carolina Hope this helps in your search. Please contact me if you need additional info or have questions.