His gravestone (which looks well weathered) says “In memory of Wm. H. son of John C & Zine Marshall, died June 3, 1876, age 1 year 13 days”. I am going with these dates; the original dates I had was he born May 21, 1871, and died June 4, 1875.

The Marshall Family history has him born May 18, 1874.