ORI4197542 Mare historiarum (The Sea of Stories) by Giovanni Colonna - Chancellor Guillaume Jouvenel des Ursins, here covered the attributes of his function visiting a copyist illuminating at work in his workshop. mid-15th century by French School, (15th century); (add.info.: Mare historiarum (The Sea of Stories) by Giovanni Colonna - Chancellor Guillaume Jouvenel des Ursins, here covered the attributes of his function visiting a copyist illuminating at work in his workshop. mid-15th century); Photo by Doppio; French, out of copyright.