This book resituates Francis Sylvester Mahony in an early nineteenth-century literary-historical context, counteracting the efforts of twentieth-century literary historians to obscure his contribution to the emergence of a distinctive Irish Catholic fiction in English. This volume re-explores his ambivalent role as a Catholic unionist contributor to the progressive Tory London periodical, Fraser's Magazine, examining his use of translation to map out an alternative literary aesthetic of the peripheries. The book also traces the development of his political thinking in his Italian journalism for Charles Dickens' Daily News, in which he responded to the events of the Famine by finding common cause with Young Ireland, and looks afresh at his final incarnation as a British Liberal commentator on Irish and European affairs for the Globe newspaper. More broadly, the book seeks to re-evaluate Mahony's cosmopolitan writings in relation to the multifaceted, transnational perspectives on Irish, British, and European affairs presented in his essays and journalism.