Why is he claiming from the estate at all? Don't you agree that if he wanted no financial settlement it might make his story a little more believable?
Don't you agree a lie detector test would help his claims too? After all if he took one and it suggested he wasn't lying you'd be the first to post about it here.
I must admit, I find it weird these claimants don't go straight to the police but ask for money instead... however, for some reason, I think this Robson claim is true. Not sure about the previous ones (perhaps because they had too much to gain), but he's got a lot to lose.