This dissertation traces the constitutive rhetorical strategies of revolutionary Irish nationalists operating transnationally from 1858-1876. Collectively known as the Fenians, they consisted of the Irish Republican Brotherhood in the United Kingdom and the Fenian Brotherhood in North America. Conceptually grounded in the main schools of Burkean constitutive rhetoric, it examines public and private letters, speeches, Constitutions, Convention Proceedings, published propaganda, and newspaper arguments of the Fenian counterpublic. It argues two main points. First, the separate national constraints imposed by England and the United States necessitated discursive and non-discursive rhetorical responses in each locale that made it near impossibl...