Mary Jane 'Polly' Hockersmith was also known as Heifner. She was born on 13 January 1808 (probably in Estill Co., Kentucky).1,2 She was the daughter of Jacob Hockersmith , Jr. and Anna Kiziah Skinner. Mary was probably a free white female under 10 years of age, in Jacob Hockersmith , Jr.'s household on the 1810 Census at Estill Co., Kentucky.3

Mary Jane 'Polly' Hockersmith married Bartholemew Heifner on 13 November 1828 at Shelby Co., Indiana, when she was 20.2
Citations

[S516] Robert T. Hockersmith, editor, Hockensmith/Hockersmith Genealogy Forum V.2, No. 3 (1213 Lions Den Drive, Green Cove Springs, FL 32043-4617: Robert T. Hockersmith, July 1996), Page 4 - Jacob and Anna’s daughter, MaryJane born.. Hereinafter cited as Hockersmith V.2, No. 3.
[S198] Randolph Co., Missouri GenWeb, online http://www.rootsweb.com/~morandol/, downloaded 23 Aug 2000,Larry Sumpter's Database of Deaths in Randolph County. Hereinafter cited as Randolph Co., Missouri GenWeb.
[S517] 1810 US Census Population Schedule,Estill Co., KY,1810 Estill Co. Census:
Jacob Hockersmith:
2 males under 10 (probably Benjamin and Thomas)
1 male 26-45 (Jacob)
2 females under 10 (probably Frances and Mary)
1 female 16-26 (Anna).

from http://bob-adams.com/gen/p6216.htm

Hope this fills in the gaps and gives you all a new starting place....

John R.