Serenity Pauline Gray is a pureblood witch who attends Hogwarts with Harry Ron and Hermione. Her brother is Havalin Gray. When her brother went missing when she was not even a year old she vowed to find out what happened to him. And spent much of her schooling years learning charms and spells to find him. Upon leaving the school she met Aurelius Dumbledore and the two went on to travel together.