My grandfather was a stuntman in this film
There are two scenes in which I know he is included prominently. Unfortunately, my father passed away 3 years ago, and took with him the recollection of the rest of the details involving Grandpa Chad.
Scene 1:
Robin cutting the rope of the castle gate (or was it the drawbridge?) and hanging on as it pulls him over the castle wall. That whole stunt was 100% Grandpa Chad, with no net or harness involved. Eroll Flynn pretty much hopped off of a soapbox for the close-up at the end.
Scene 2:
During the rescue of Robin from the executioner, there is a brief shot where a castle guard takes an arrow in the chest and slumps over. The gaurd is Grandpa Chad, and the shot is of particular signifigance (despite how brief it is) since his face and upper body fill the frame and you can clearly see him.
I want to take a moment to thank the fine folks here at the IMDB for adding this film to his filmography based only on my assertion that he was an uncredited stuntman in it, and for their willingness to upload a picture of him at no charge, if I could just find one...
Check out my grandpa!
http://www.imdb.com/name/nm0873865/