I haven't seen any interviews or quotes either pro or contra from Cosby's children and grandchildren? If there are some I'd be glad to read them but I don't think it's fair to put words in their mouths based on the absence of any comments.
But even if they came out to defend him it wouldn't prove anything to me really. It's possible that the children and grandchildren don't know anything about it. Bill Cosby is not being accused of incest or familial abuse here so it's quite possible that he could be nice to his own kids and fail to rape his grandkids and have a Hyde face come out when he's with aspiring models who are not related to him. Or the family might know about it but want to protect him anyway.
http://hollywoodlife.com/2014/11/20/raven-simone-bill-cosby-rape-allegations/
Yes, Raven Symone said nothing untoward occurred but that doesn't really prove anything to me either. I'm sure even if he raped all the women who have come out now there are some females that he didn't have time or the inclination to rape. Furthermore, Raven Symone was quite a young child at the time she was in the Cosby Show, and no one's accused him of being a pedophile that I know of. All the women who have come forward were adults or teenagers at the time, not small children.
Everybody is innocent in a court of law until proven guilty, including the ones who did it.
Presumption of innocence in a court of law does not mean that the society in general can't have their own opinions as to the guilt of people who have been accused of something even if they weren't convicted, it means that no one can't be convicted of a crime without following the legal standards.
True but it cuts both ways I think... If you've made up your mind that no crime occurred and the people who say so are lying because it wasn't reported early enough or there are not enough DNA tests and police files or because you like the celebrity and that's why there's an unfair media assault on him or whatever it's just as easy to become blind.