Brian David Sibley is an English writer. He is author of over 100 hours of radio drama and has written and presented hundreds of radio documentaries, features and weekly programmes. He is widely known as the author of many film "making of" books, including those for the Harry Potter series and The Lord of the Rings and The Hobbit trilogies.

Titus Groan is a novel by Mervyn Peake, first published in 1946. It is the first novel in the Gormenghast series.