I have a Sarah Berkey on my family tree.She was born Jan. 4, 1868, died Mar. 19, 1919, and married Christian Shirk.Her parents were Jacob K. Berkey (Apr. 27, 1835-Dec. 4, 1911) and Mary Ann Schrock Berkey (Mar. 1, 1841-Mar. 19, 1917).Could this be your Sarah?One of her brothers was Aaron Berkey, my great-grandfather.