You mentioned a Henry A. Stetson, born in Ripley, NY who married an Elizabeth Spink, and they both died in Jackson co, MI.
From the 1870 census of Jackson co, it shows Henry age 50 with wife Elizabeth 44, and children Adelbert, Clarence, Henry A. Jr, and Robert M. It also shows a Mahalia Spink, age 64, prob the mother of Elizabeth.
Where did you get your marriage information. I am researching the Spink family. Thanks