Found in abstracts of Coventry, RI Wills, Probate records Vol 5 1838-1841: (Not sure this is the same Jonathan, but the date is right. It is here for furtue reference.} This record says that it is from Volume 10, Abstract Coventry Wills, Page 143
Jonathan Briggs, of Co, yeoman. Will dated 2 Nov 1837, proved 10 Feb 1838, pgs 357-359. Mentions" wife Abiaail BRIGGS, sons Wanton BRIGGS, Olney BRIGGS, and Giles BRIGGS. Daughters Niabba BLANCHARD and Polly JORDAN wife of John JORDQN, Granddaughter Clarissa RAP.
The sons` names are family names, so they are at least probably related.