Representation of the Count Bishop of Beauvais in the Grand Armorial Equestre de la Toison d'Or. The Count Bishop of Beauvais was one of the 12 peers of France. This portrait was done between 1429 and 1461 when Guillaume de Hellande was Count Bishop of Beauvais.
The text above the portrait reads "L'evesq de Beauvais mître" which means "the Bishop of Beauvais with his mitre".
Bibliothèque Nationale de France - Gallica
Armorial de l'Europe et de la Toison d'or, fac similé du Grand armorial équestre de la Toison d'or