The
Diddy Men are commonly believed to be a creation of the
British comedian
Ken Dodd. However, they have existed in local mythology for much longer and, along with the
Treacle and Jam Butty Mines of
Knotty Ash, had been referred to in the earlier act of another
Liverpool comedian
Arthur Askey. When Ken Dodd began playing seaside resorts, he made famous his home area of
Knotty Ash in
Liverpool and popularised a miniature race of people who inhabited it. Diddy is
northern slang for "little".