His father signed the initial agreement for the incorporation of the settlement in 1686, and his name appears on the plat map, but only the surname of LeMoine is given in both cases.
[3] The original French immigrants had settled around a spring and planted an orchard there, and following violent clashes with the English citizens of the area, and the subsequent departure of most of the French, the Mawneys were one of only two families that remained on their original land, the Targe' (Tourgee) family being the other.
[6] In May 1735 he resigned as Captain of the East Greenwich company, becoming a major in the Providence County militia.
[11][12] His oldest son, John Mawney, was the Sheriff of Providence for several years before his early death; he married Amey Gibbs, a daughter of Robert and Amey (Whipple) Gibbs, and a granddaughter of Colonel Joseph Whipple and niece of Deputy Governor Joseph Whipple, Jr.[13][14] Mawney's daughter Mercy married Thomas Fry, a grandson of colonial Rhode Island Deputy Governor Thomas Frye, and a great grandson of Warwick founders Samuel Gorton and John Greene.
[11][15] His daughter Mary married Brigadier General James Angell, a great grandson of early Providence settler Thomas Angell, and also a great grandson of Rhode Island colonial President Gregory Dexter.
[13] John Mawney, Jr., and three other Gaspee veterans were honored by the State of Rhode Island 50 years after the burning of the vessel.