I found this in the Chester County will abstrcts at the Pa genweb site,it may or may not be your david, Chris.
SMEDLEY, CALEB. Willistown. March 13, 1806: May 19, 1806. To son Caleb tract of land in Easttown, containing 15 acres; also plantation inWillistown on which I now dwell, containing by estimate 80 acres, he paying the legacies. To daughter Jane Andrews £30. To daughter Mary Bittle's children, Caleb, Frederick, Abraham and William 10 s. each. To grandaughter Lydia Alexander £25, &c. To granddaughter Elizabeth, daughter of Jane Andrews £5, &c. To grandson Caleb Andrews £5 at 21. Remainder to son Caleb. Executors: Son Caleb and brother Ambrose Smedley. Wits.: Israel Massey, Thomas Bishop, David Alexander. Caveat filed by Robert Andrews and William Bittle, March 24, 1806; withdrawn May 5, 1806.