This new book on Castilian kingship by Fernando Arias Guillén seeks to shine further light on the neglected reign of Alfonso XI (1312–50) and those of his predecessors, Fernando IV and Sancho IV, most often overshadowed by the prominent image of the father of the latter, Alfonso X. The author studies a number of different topics relevant to kingship, its representation, and its practice, such as legitimacy, sacral kingship, the territoriality of the crown’s realms, itineration, royal burial sites, the corporate aspect of monarchy, or noble factionalism, among others. Through this, he intends to offer a general overview of the ways in which kingship was constructed and represented, and how this changed during a century of Castilian history, culminating in the consolidation of monarchic rule by the mature Alfonso XI, a “paradigm of successful kingship” and “emblematic of the ‘strong king’ archetype: a monarch who combined military prowess and ruling skills”.