We know that Kakashi's dad killed himself after he got disgraced or something...whatever. We don't know diddly-shit about his mom (that seems to be a recurring theme in Naruto...we don't know diddly-shit about hardly ANYONE's Mom). Just a thought, and feel free to point out something painfully obvious as to why I'm wrong, but is it at all possible that Yondaime could have married, or at least 'comforted' Kakashi's mom, and produced Naruto? There ARE some similarities between Kakashi and Naruto (some, not alot, but there ARE some), and even though it's just flippant evidence, it would be something that could have very VERY interesting ramifications in the plot itself. Just another thought. Feel free to flame me into oblivion.