Gunnora was a founder and of Coutances Cathedral and laid its first stone. In one of her own charters after Richard's death she gave two pieces of land (called allods) to the abbey of Mont Saint-Michel. These were Britavilla and Domjean which were part of her dowry. She gave them for the soul of her husband, for her own soul and that of her sons "count Richard, archbishop Robert, and others..." She also signed a charter, , to that same abbey as "Gonnor matris comitis" (Gunnor, mother of the count). Gunnora, as wife and countess, was able to use her influence to see her kin favored, and several of the most prominent Anglo-Norman families on both sides of the English Channel are descended from her, her sisters and her nieces. Gunnora died .