Often described as original or inimitable, Maria Edgeworth’s Castle Rackrent has a reputation as a one-off experiment, a type of writing not to be attempted again in the author’s own lifetime. This essay reappraises the novel’s reputation, not in order to deny its exceptional status but rather to renew our understanding of Edgeworth’s precocious literary achievements. I analyze Castle Rackrent’s distinctively bookish approach to the past in relation to the culture of Irish Romanticism, arguing that ideas of agency and mediation are central to the novel’s astonishing ability to reimagine relationships between voice, print, and history.