Le motif de la croix en « X » intégré aux pavements des églises : l’image au service d’une légitimation de l’autorité princière

From the 12th century, large crosses in « X » are painted or carved on the vault of churches’ choir, or integrated into mosaics of pavement, as in Saint-Bertin of Saint-Omer, Saint-André of Rosans and Ganagobie. As projection of the vault on the ground, they take part in the organization of the liturgical space. In our opinion, they also serve to legitimize the laic authority, principal sponsor of these settings.