Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Roger Caesar Marius Bernard de Delgado Torres Castillo Roberto(1 March 1918 18 June 1973) was an English actor, best known for his role as the Master in Doctor Who. He was born in Whitechapel, in the East End of London - Delgado often remarked to Doctor Who actor Jon Pertwee, a close friend, that this made him a true Cockney, as he was born within the sound of the Bow Bells - although his mother was Belgian and his father Spanish. He attended the CVMS, a Roman Catholic secondary school in Holland Park.