They called him "Long Henry". At the battle of Wilson's Creek an infantry commander saw Henry's head sticking up higher than everybody else and yelled " Hey you fool get down off that stump". Henry answered back " I ain't no fool and I ain't on no stump".
The source for this is in the book Branded as Rebels, page 431, compiled by Eakin and Hale. They give as their Ref. Versailles Leader 1904, Kansas City Times 1937,
Independence Examiner May 1 1941

Bill