The Twins of Gryffindor

Imagine George Weasley sending his son to Hogwarts for the first time, and his son is sorted into Gryffindor and everyone is very happy. But one day at school he calls home, highly distressed, asking if his father is alright. George keeps reassuring him "yes yes im fine im fine nothing happened, what's wrong?" and his son says, "There's a ghost here who looks exactly like you."