Sarah Shively, 1813, PA

I am searching for ancestors of Sarah (1813-1893)who was probably born in Bucks Co., PA.She married John A. Kiefer (20 Oct 1810-1893) and removed to Easton, Northampton, PA.Only known daughter was Anna S. Kiefer (9 Feb 1833-20 Apr 1926).Any additional information or corrections will be greatly appreciated.