John Redmond and Edward Carson remain two of the biggest names in modern Irish history. At the peak of their careers as senior members of the British parliament, they were locked together in combat over Home Rule. Divided by the union with Britain, they had surprisingly much in common. Contemporaries saw them together, and routinely judged them in comparative contexts. But with the partition of Ireland and independence, they have been disconnected, viewed wholly apart, and seen in political contexts scarcely imagined by people at the time. This volume offers the first dual and comparative biography of Redmond and Carson - the first to assess them as contemporaries would have done. It uses both new approaches and much new evidence to shed fresh light on their sometimes fraught private lives, their professional and political achievements, and their stands on violence and war. The result is a strikingly original reassessment of the two men and their legacies.