A biosketch reports [1]:
Christian Greenawalt, (Philip-Lorentz) b . December 14, 1758, in Cocalico township, Lancaster county, Pa.; d. February 3, 1796, in Harrisburg, Penn'a.; m. Elizabeth Kelker, b. April 1, 1766, near Lebanon, Pa.; d. July 30, 1825, in Harrisburg, Pa., and with her husband there buried; daughter of Anthony Kelker and Mary Magdalena Meister.
Elizabeth Kelker Greenawalt, subsequently, October 29, 1799, married John Gillum, tanner, of Harrisburg, who d. January 2, 1804, leaving two children, Jesse and Rachel, both under fourteen years of age, but whether by this or a previous marriage is not known.
[1] William Henry Egle, Pennsylvania Genealogies: Scotch-Irish and German, [GoogleBooks].