Classic TV - One Step Beyond - "Doomsday" (1959)

A poor, pretty, village woman living in Scotland in the 17th Century is sentenced to be burned at the stake, for the natural death of her lover, the son of an Earl. She shouts out a curse that the oldest son of every generation to come of the Earl will die before the father.
https://www.imdb.com/title/tt0507774/plotsummary?ref_=tt_ov_pl

This video is in the Public Domain.