Career
He was a prolific producer of penny dreadfuls. He is now remembered as the co-creator (with James Malcolm Rymer) of the fictional Sweeney Todd, the "demon barber" immortalized in his The String of Pearls, as well as the co-author with Rymer of Varney the Vampire. He wrote under pseudonyms including Bos, a takeoff of Charles Dickens" own pen name, Boz.
Before joining Edward Lloyd"s publishing factory, Prest had made a name for himself as a talented musician and composer.