David: According to Gilbert Cope: William Calvert is the son of Thomas Calvert and Sarah Williamson of Upper Providence, Chester Co., PA. His siblings are: Joshua, disowned by Chester mo. mtg. Rebecca, joins Philadelphia mo. mtg. John m. Jane, wid. of Jos. Mercer, dau. of Edward & Sarah Swayne Daniel, disowned for neglecting meetings & leaving the parts Isaac, disowned 1769 for being married by priest Thomas, d. 1781, will proved 1781, leaves hat to Isaac's son Robert Deborah, disowned 1779.