My husband when reading through my book turns them into mum and dad no matter what the circumstances. I only do that when referring to a mum or a dad or mums and dads. When it is a specific person I captilise them. Which is the correct usage? Could this be a UK/US difference because I seem to remember the class where you captilised familial relationships when they referred to a specific person. I am happy to be wrong lol but it feels wrong.