Season 2, episode 4.
Original air date: 13 October 1959.
A poor, pretty, village woman living ancient England is sentenced to be burned at the stake, for the natural death of her lover, the son of and Earl. So she shouts out a curse that the oldest son of every generation to come of the Earl will die before the father.
Cast: Donald Harron (Jamie/ William), Torin Thatcher (Earl of Culdane), Edward Atienza (Doctor), Fintan Meyler (Harriet), Pat Michon (Catherine), Patrick O`Moore (Trial Witness), Lumsden Hare (Judge), Beryl Machin (Nurse) and John Newland (Himself- Host)
From IMDB.