By the Sword Divided (1983)

This classic period drama series follows the fortunes of the aristocratic Lacey family, living peacefully in Arnescote Castle until the onset of the English Civil War in 1640. Sir Martin Lacey, the head of the family, is steadfastly loyal to the King. However the family is torn apart when his eldest daughter Anne weds John Fletcher - son of a merchant family who support the forces of Cromwell.