Parsons, Joseph Jr and Theodore Jr

Who were the parents of Joseph Parsons Jr who married in York, ME15 Sep 1754 Mary Higgens, daughter of John and Mary (Bowden) Higgins? Also who were the parents of Theodore Parsons Jr Born York, ME, 1802, died there 31 May 1889, married there Oct 1851 Emeline Sewall, born 1801, died 10 Aug 1882 York, daughter of Nathaniel and Hannah (Moore) Sewall? Joseph is NOT the son of Joseph and Miriam (Preble) Parsons, unless he's illegitimate; ditto, Theodore is NOT the son of Theodore and Ruth (Wakefield) Parsons.