Kiddushin 78: What Can I Tell You about My Son?

A kohen whose kiddushin is with a woman who is prohibited to him and who is the intimate with her - he gets two counts against him, one for each prohibition. The idea is that kiddushin is prohibited for the way it leads to a prohibited sexual relationship. Also, a new mishnah about how a father and even both parents can't declare their child (or child-to-be) a mamzer.