Resumen de Identification of the sole extant original charter issued by Fernán González, Count of Castile (932–970)

Julio Escalona Monge, Isabel Velázquez Soriano, Paloma Juárez Benítez

• A 937 charter now at the British Library is identified as the sole extant original issued by Fernán González, Count of Castile, and as having been written by the monk Florentius of Valeranica, the best-known scribe in tenth-century Castile. The piece's authenticity is established through detailed diplomatic and palaeographical analysis, including comparison with other works by Florentius.