This chapter deals with the konungasögur, the sagas of the Norwegian and Danish kings. Taking a chronological approach, it outlines the development of the genre from the Icelandic, Danish and Norwegian histories of the twelfth century through to the major compilations of the thirteenth century (Morkinskinna, Fagrskinna and Heimskringla) and the substantial manuscript collections of the fourteenth and fifteenth centuries, such as Flateyjarbók. It stresses the diversity of the sources which the authors of the kings’ sagas incorporated within their works, emphasizing the fundamentally intertextual nature of the konungasaga genre. In discussing the growth of the genre, it highlights the variety of voices, sources and modes contained within these sagas, exemplified in their different approaches to the skaldic verses quoted within their prosimetric structure. Placing Old Norse-Icelandic historiography within the context of historical writing in medieval Europe, the chapter argues that the kings’ sagas offer a polyphonic history of the medieval north, and in doing so explore the process of history-writing itself.