Marriage announcements were in the Providence Phenix and RI American, 17 Oct 1819.
(See Arnold's "Vital Record of RI" Vol. XIX p.450 and Vol. XX p.276.)
Sally R. Johnson is in the 1850 US Census at Cranston, RI, at age 30, along with her husband Nicholas Johnson, 42, a mariner. Also in the home are Sally Greene, age 85; David Snow, age 30, a shoemaker; and Sarah M. Olden, age 10.
Apparently in the same household, although on the next census page, are Richard T. Remington, age 27, a jeweller; Sophia Remington, age 26; and their children Isabella 4, John R. 2, and Nicholas J. 1 month.
Could Sarah M. Olden possibly be a daughter by a first marriage?