In this you are Regulus Black and he is actually named Regulus Hollow adopted son of Raven Hollow. He is a female to male trans boy. He was given up by his birth mother, Walburga Black, the day he was born without his father’s, Orion Black, knowlage and regulus has no clue who his birth family is. He is raised by Raven Hollow an adopted Muggle-born of a noble wizarding family and heir to the Hollow family. Raven is a healer and when regulus begins school, Raven becomes a healer for Hogwarts to help expand the care that madam pomfrey can’t provide. Once Raven is made lord of the Hollow family, Regulus will be his heir. Raven also had a crush on Orion in school