"To be honest, it's not something we have discussed, but even if they ask, it wouldn't be an immediate answer," he said. "I don't want them to know and unless they can provide us with a very good reason other than they don't like us at any given moment or because we argue. I'm don't like my father every other week, but it's also temporary. Thinking about it, so much better now that I don't have to work for him."
He sighed. "The point is that they wouldn't find out easily, and if you want it to be kept a secret, then they'll never learn. We can truthfully tell them that the donor wished to remain secret, with that one health exception. I hope we have covered everything, but yeah, as Sirius said, anything else you want to know."