How about Derrick Kujack? I found him on Facebook, but he doesn't have a 'c' in his last name. I feel like a stalker when I searched his name, but everyone does it not for bad purposes.
When I did my first takeshi's castle Interview, I was young and stupid so it didn't accour to me that people wouldn't want to talk about something that happend 20 years ago. I called this guy who was on the show and had won some money, We'll call him murray, I had never met him All I knew was that he was the same guy who was a contestant on this show. I introduced myself said "hi, I saw you were on this gameshow in 1988, I'm doing an article would you like to do an interview about your experince."
"Why would you want to do an interivew about that?" he says.
I try explaing that the show had a resergance in the U.K. and it is really popular in small audinces. Still very aprhensive, (And how could blame him). He did eventually agree to an interview and he was very nice about sharing his experince. But that interview changed the way I approached people from then on. So yeah it can be intimidating asking these real human beings to talk something that even the people who are close to them don't know about.