Ryan's Daughter

David Lean's sweeping romance Ryan's Daughter (1970), set in the wake of the 1916 Easter Rising in Ireland.

In an Irish seaside town, the tavern owner's daughter, Rosy Ryan (Sarah Miles), strays from her passionless marriage to be with a British soldier (Christopher Jones) who has come to control contact between the IRA and the Germans. When Rosy's father informs on an IRA leader, who is then arrested, the townspeople assume Rosy to be the traitor...