Answer:

jkrowling

AnswerCrossword Clue
JKROWLINGHarry Potter's creator
JKROWLINGCreator of Hogwarts
JKROWLINGThe only author on the Forbes Billionaires list
JKROWLINGPotter penner
JKROWLINGBig name in sorcery
JKROWLINGFirst billionaire book author
JKROWLINGAuthor who has used the pseudonym Newt Scamander
JKROWLINGAuthor who received an O.B.E. in 2001
JKROWLINGFirst person to win a Smarties Prize, for children's books, three years in a row
JKROWLINGCreator of the currency system consisting of galleons, sickles and knuts
JKROWLINGAuthor of the best-selling book series in history
JKROWLINGCreator of Hogwarts [10]