I have the following CALVERTS in my ancestry. Hopefully a connection can be made. Sarah CALVERT, daughter of William CALVERT and Mary POLHAMUS. Sarah was b. Oct 3, 1823 in Williamsport, PA. Married Benjamin STRAWBRIDGE, son of Benjamin and Margaret KINMAN TROWBRIDGE, on Jul 11, 1844 in Williamsport, PA… William CALVERT, son of John and Elizabeth CALVERT, b. Nov 1797, in Williamsport, PA. William, according to the History of Williamsport was the first male child born in Williamsport. William married Mary POLHAMUS about 1820 in Williamsport, PA. William died 27 Aug 1874 and Mary died 27 Sep 1878, both in Williamsport, PA. William and Mary (ref above) are both buried in the Williamsport Cemetery in Lot 240. John CALVERT, parents unknown, b. in 1756 in Notttingham, England. He married an Elizabeth GREENFIELD, daughter of John GREENFIELD and Susannah NEWHAM, c. 7/2/1766 in Nottingham, England. John died Dec 1801 in Williamsport, PA