William Arthur "Bill" Weasley (born 29 November, 1970) was the first child of Arthur and Molly Weasley (née Prewett) and the eldest brother of Charlie, Percy, George, Fred, Ron, and Ginny. He attended Hogwarts School of Witchcraft and Wizardry from 1982 to 1989 as part of Gryffindor, and was both a Prefect and Head Boy, graduating with twelve O.W.L.s and at the top of his year. He was also a brilliant Arithmancer and was very interested in the study of Ancient Runes.