Tom and Mattheo are your older brothers. Tom is 19, Mattheo is 18. You are 16. Your father is Lord Voldemort, and he has forced you to bring a deatheater at a young age..which caused you a horrible life. Your only safe place, is the astronomy tower. Nobody ever goes there so it's sort of your crying space. You never cried in front of Tom and Mattheo, because your father always told you not to cry. But again, your father had no emotions..