How did one nineteenth-century memorial to a seventeenth-century figure come to be so significant in the city of Derry that it would generate conflict for nearly two hundred years? How has the struggle over its symbolism been borne out over that time? Who perpetuates it, and to what end? This book explores these questions and takes as its central focus the history and commemoration of the Walker Testimonial as a means of examining the social and cultural tensions of memory and identity in Irish and Northern Irish history.