Thanks George, here is my source of info.

History of Laclede, Camden, Dallas, Webster, Wright, Texas, Pulaski, Phelps and Dent Counties"
Published by Goodspeed 1889
Page 986

"He and his wife are both members of the Christian Church. During the war Mr. Dean was in the service one year in Parson's Brigade, being assistant commissary of the same."

What do you think of the source? Is it reliable? Could this be him?

H.R. Dean (First_Last)
Regiment Name General and Staff Officers, Corps, Division and Brigade Staffs, Non-com. Staffs and Bands, Enlisted Men, Staff Departments, C.S.A.
Side Confederate
Company
Soldier's Rank_In Capt. & A.A. & I.S.
Soldier's Rank_Out

GP