The Bolton comic return visit every two appeals by Alan Madison buried donated hot weather shows.
Madison's family indicator is only found when the news about Peter went on the official website.
He by his agent was contacted a weekend address to send the money requested.Madison’s grandmother Alison Foster said: “It’s absolutely fantastic.
We thought maybe it would raise a couple of thousand, but we’re all amazed it’s over £10,000.
“We are writing him a letter to Peter to say thank you for it, and we’re trying to find out how he’s heard about Madison’s appeal. We haven’t got a clue.”
Mrs Foster added: “We’re really, really hoping that the tumour has shrunk again this time.
“Madison does seem to be coping better with the chemotherapy at the moment, and this time has had no sickness. She’s also eating 24/7 and is enjoying school.
“We’re hoping that she will be able to meet Peter Kay to say thank you to him for his donation, which along with everyone else’s is helping her fight.”
Peter said: “I just read about it in the paper and decided to help the appeal. I hope it helps in some way.”