I believe I have your Henry in my family tree. I have:

Henry M Yon
b 28 May 1856 PA
served Pvt Co G, 88 Reg PA Vol
d 28 Oct 1926 Blair County, PA
parents Levi Yon and Ruth Ann Payne
m Matilda J Yingling 12 Dec 1867

I have more information if this is who you want. You may email me privately at lynfrieda@gmail.com