Jacob Perkins is son of John Perkins & Elizabeth
Source 1: Ipswich Marriages pg: 571;
Source 2. Genealogical Dictionary of Early Settlers of New England by Savage.
There is a conflict with death date; Kinsman Genealogy lists death according to dates of will, while New England marriages Prior to 1700 lists death as 1719;
Source 3. Will proved 3 Dec 1705 & recorded in Essex Probate; Mentions wife Sarah & 8 Children.