Sadly they are both dead now - and no one in the family seems to know much about where they came from.
The photos appear to be of Prince Charles preparing for a hunt.
If anyone could shed some light on where these photos came from I would really appreciate it.
The complete collection can be found here http://www.garrywalker.com/2013/12/25/previously-unpublished-pictures-of-charles-prince-of-wales/
Here is one of them:
