Ascendancy

Ascendancy is a 1983 British drama film directed by Edward Bennett and starring Julie Covington and Ian Charleson. It tells the story of a woman who is a member of the British landowning 'Ascendancy' in Ireland during World War I. Gradually, she learns about the Irish independence movement, and becomes involved with it.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.