Francesca Simon is a writer, journalist and - most famously - the creator of the "Horrid Henry" series of children's books
She describes herself as "a giddy fan" of the artist, film-maker and poet Jean Cocteau
She celebrates his life and work with the help of expert witness Dr Andy Martin of Cambridge University
Matthew Parris finds out more
Producer: Christine Hall
First broadcast on BBC Radio 4 in December 2012.