Hery, Ery,
Hank, Hal, and Harry are common nicknames for people named Henry.
Both Hal and Hank are nicknames for Henry, and Hank is one of the Germanic forms of the name.
Harry is a nickname. His real first name is Henry :)
Henry Shipes went by Henry.
Henry Zavala goes by Henry.
Lou Henry goes by Lou, and Lou Henry.
Henry Vestine went by Sunflower.
Henry Mayers goes by Madness.
Henry McCoy goes by The Beast.
Henry Wales went by Hank.
Henry Weintraub goes by Hank.
Henry Kulky went by Bomber.