Swinford, like other areas in the West of Ireland, was the site of a number of actions during the Irish War of Independence (1919–1921). According to one account, nationalists in East Mayo had a long running split dating back to the Parnell scandal, with relations between nationalist factions in Swinford and Meelick particularly poor. The failure to organise in advance of the Easter Rebellion in 1916 paradoxically meant however that relatively few Swinford men were arrested and interned, meaning they were outside the network of republican leaders that developed in the internment camps and prisons. It was not until approx 1920 that the IRA was structured in Swinford, and from then, with the participation of a group of young volunteers, the activity increased, particularly in the sphere of Republican Courts.