Incipit epta beati calixti pape

The Codex Calixtinus of Santiago de Compostela Cathedral and other medieval copies of the Liber Sancti Jacobi.

The Liber Sancti Jacobi consists of five books compiled between 1138-1173 about apostle Saint James and the pilgrimage to his shrine in Compostela, in northwest of the Iberian Peninsula. It’s also known as Codex Calixtinus, as it was attributed to Pope Calixtus II, and is considered the oldest and most complete version. It served to the support and promotion of the cult of Saint James and the Camino de Santiago as one of the greatest Christian pilgrimage routes. It documents the Iberian origins of the Jacobian tradition in Europe and is a source of knowledge for European Medieval religiosity and culture.