Yep, Sir Henry and 303 Lithgow are one and the same. He was King Henry for a short while but the peasants staged an uprising and dethroned him.
I have been fortunate to have spent time with him here and on three other forums. The most recent being the Henry Rifle Forums linked to above. It is a great group and growing. He is a co-owner on it and lets me do a little light house keeping.
Check us out but be aware there is no minefield just folks who love their firearms and good friends.