I have three William Henry Leasures in my database.Any of them MAY be the one you are looking for, but I vote for #1.
WILLIAM HENRY LEASURE, b. February 1840 in Muskingum County, OH; married May 20, 1862 Mary Irwin (b. 1840 in OH); d. May 20, 1862 in St. Louis, MO.Children:Cora B., b. 1869, Rosa S., b. 1870, Elizabeth, b. 1874 and Amos Irwin, b. 10/01/1876 m. 3/20/1896 to Lillie May Quail.
WILLIAM HENRY LEASURE, b. March, 1842 in Muskingum County, OH, d. August 19, 1863 in Douglas Hospital, Washington D. C.
WILLIAM HENRY LEASURE, b. June 27, 1847 in Muskingum County, OH.Father Jesse Leasure, mother Sarah Rine.