Remus bitten by Greyback when?
Someone just went out of their way to inform me on FF.net that I had a canon error in one of my fics because I had Remus bitten by Fenrir Greyback on his sixth birthday. This person insists that Remus was actually five when he became a werewolf, and that this fact is stated in canon in HBP. I do not remember this at all, but since Remus is my favourite character and I pay extra-special attention to every shred of canon he gets, I feel that if this was ever explicitly stated, I would know about it. I do not have access to my books at the moment, and Google has failed me. Am I losing my mind, or is this person just mistaken? If I am wrong here, can someone provide me with the exact quote in which it is mentioned?