This year marks the 100th anniversary of the work of the Irish Boundary Commission, which was to examine the border created by an Act of Parliament between Northern Ireland and the Irish Free State, in order to see whether territory should change hands between the two states. Irish Nationalists expected that a substantial amount of territory would shift, while Irish Unionists wanted no changes to the land they now governed. The Commission’s report—which did recommend minor changes to both states—was shelved by the governments in London, Dublin, and Belfast in December 1925, with the border remains now as it was then. The focus of historians on the actions of state leaders, however, has deflected us from looking carefully at the material collected by the Commission, which is a rich set of interviews and written submissions from ordinary men and women along the Irish border. What do their voices say about how they saw themselves and their neighbors, who were caught up in the events being shaped in the drawing rooms of their capital cities?