Important pretexts for Joyce’s treatment of duality or split-personality in Finnegans Wake come from Scottish literature. Joyce draws upon works such as James Hogg’s Private Memoirs and Confessions of a Justified Sinner (1824) and Robert Louis Stevenson’s The Strange Case of Dr Jekyll and Mr Hyde (1886), as well as ancient and modern Scottish and Irish history in Finnegans Wake , creating a mutating network of phrases concerned with sibling rivalry, mental divisions, and the hybrid nature of nations. In this essay, I examine Joyce’s interest in Scottish matters and discuss the way Joyce’s Pict/Scot motif expresses some of the main themes of the Wake .