A little additional information. William's parents were James Sloan (1805-1880) and Sally S Sloan (1809-1865). They were probably from Wayne County New York. After Sally died, James married Mercy Whitney.
Williams Sloan remarried in 1873 to Catherine Bishop (1847-?) from Princeton, Illinois. They went on to have three children: Fred, Flora and Frank (Catherine had one from a prior marriage).
Any information on descendants of William and James, or ancestors in New York would be appreciated!