In historical research, Stephen Langton is primarily known as a Parisian master of theology. This biography is dedicated to Langton's works as archbishop of Canterbury (1207-1228). His pontificate coincided with a period of political crisis in England, most notably the conflicts leading to the Magna Carta and its aftermath. This study sets out to show how Langton actively helped negotiate the Magna Carta: first, as an intercessor for the English barons and then by acting as a mediator between King John and the rebels. Furthermore, he was significantly involved in restoring the powers of...