↑ Threlfall, John Brooks, "Thomas Smith of Ipswich, Massachusetts," v. 142 [Jan 1988] : 51-55, in The New England Historical and Genealogical Register. (Boston: New England Historic Genealogical Society) (at 142:55).
Mary(2) Smith … m. (2) at Ipswich 17 May 1682 Thomas Knowlton.