The only other thing I clearly remember is Dennis had a shrine to Colin in his Studio, which was actually at his parents house. I'm pretty sure he was in a relationship, possibly married to either Hannah Abbott or Susan Bones and she was a bit "round the twist " as well. I don't remember Draco or Harry having any kids, either seperately or together, but it was a few years since I've read it. I know it isn't the Hybrid Series since I read that years before the one I'm looking for.