John became a freeman at Warwick on 5 May 1724. He was a deputy to the General Assembly from Coventry in 1743 and 1744.
His will mentions his wife, Sarah; sons Benjamin, John, Joseph, Jonathan, & Obadiah; and daughters Elizabeth Hill & Mehitable Strait.
(Source for the above information: Linda L. Mathews in "A Line of Descent from Elkanah Johnson of Coventry . . ." in RI Roots Magazine, Vol. 29, No. 3, p. 118. Additional information on John and his family may be found in this very informative article.)