I am assuming this marriage in Arnold's "Vital Record of Rhode Island" applies to this Levi, because he is identified as "Levi, of Nicholas." They were married by Samuel Wall, Justice. The Rhode Island Cemetery Database confirms these birth dates, and that they are both buried in West Greenwich Historical Cemetery #21.
Children
1. Captain Nicholas Whitford, b. 28 Jul 1773, West Greenwich, Kent Co., RI d. 8 Jan 1856 (Age 82 years)
2. Ezekiel Whitford, b. 2 Jan 1775 d. 15 Mar 1850 (Age 75 years)