Whether we have the same William Henry DOTSON - I don't know but, mine (who is my gggrandfather) was born 22 FEB 1844, I believe in PA or IN, d. 8 Jan 1919 in Tuscola, IL of angina pectoris (?). He was a mail carrier.
His son, William Marcus DOTSON b. 14 Oct 1870, d. 20 Dec 1930 in Neuman, IL of Heart block due to coronary occlusion super (something) by acute indigestion. Retired farmer.
His son, William Lesley DOTSON, b. 12 Mar 1910, d. 1936 in Douglas County, IL of heart problems. Tavern owner.
I have death certificates for Wm. Henry Dotson and Wm. Marcus Dotson.