Guest Stars Elspet Gray as Gertrude, Queen of Flanders Tim McInnerny as Percy, Duke of Northumberland Tony Robinson as Baldrick, Son of Robin the Dung Gatherer Robert East as Harry, Prince of Wales Bert Parnaby as Cain, A Peasant Roy Evans as Abel, A Peasant Bill Wallis as Sir Justin de Boinod William Russell as The Duke of Winchester David Delve as Sir George de Boeuf Joyce Grant as Mother Superior Paul McDowell as Herbert, Archbishop of Canterbury Leslie Sands as Lord Graveney Arthur Hewlett as Godfrey, Archbishop of Canterbury Arthur Hewlett as William, Bishop of London Carolyn Colquohoun as Sister Sara David Nunn as Messenger Uncredited Patrick Allen voices Narrator