Walter Leonard Sparrow (January 22, 1927 – May 31, 2000) was an English film and television actor best known for his appearance as Duncan in the 1991 film Robin Hood: Prince of Thieves starring Kevin Costner. He began his career as a stand up comedian before turning to drama and performing with the Royal Shakespeare Company. He made his movie debut in 1965's Dr.Terror's House of Horrors. As well as Robin Hood, Sparrow appeared in more than 30 films, including I Hired A Contract Killer, The Acc...