J. K. Rowling

J.K. Rowling, also known as Joanne Rowling, was the author of the Harry Potter series of novels. In 2004, she was among the VIP guests for the gala opening of the Tomorrow Windows exhibit at the Tate Modern. (PROSE: The Tomorrow Windows)

The Tenth Doctor and Martha Jones were fans of the Potter books, and the Doctor admitted to crying after reading the seventh volume. Later, when Potter's spell "expelliarmus" was given life in order to help William Shakespeare defeat the Carrionites, the Doctor exclaimed, "Good old J.K.!" (TV: The Shakespeare Code)

Rowling wrote eleven Harry Potter books, which the Eighth Doctor had in his TARDIS. (PROSE: The Gallifrey Chronicles)

She had a descendant known as PQ Rowling. (PROSE: Doctor Who and the Adaptation of Death)

Behind the scenes

 * In The Tomorrow Windows her name is given as Joanne Rowling, the name used on the first publishing of the first Harry Potter book. In 2004, when The Tomorrow Windows was written and set, her married name was Joanne Murray and her pen-name was J.K. Rowling.
 * In 2005 Russell T Davies asked Rowling to write for Doctor Who, she said she was "was amused by the suggestion but simply [didn't] have the time". She was writing the sixth Harry Potter novel at the time.
 * In his 2008 autobiography, A Writer's Tale, Davies reveals that he considered basing the 2008 Christmas special around a guest appearance by Rowling.
 * The reference in The Gallifrey Chronicles to there being eleven Harry Potter novels can be seen as an anachronism (written in 2005, two years before the publication of Harry Potter and the Deathly Hallows, the author may have been unaware Rowling only planned seven books). However, Rowling has herself made comments since the publication of The Deathly Hallows that she hasn't dismissed the possibility of writing another Potter novel in the future; perhaps in the Who universe she did. That said, Rowling did release three additional books that expand the Harry Potter franchise. 'Fantastic Beasts & Where to Find Them', 'Quidditch Through The Ages' and 'The Tales of Beedle the Bard'. If these are included, this leaves just one book unaccounted for.