sentences:  Nino's daughter Joanna succeeded to the title of Gallura and married Rizzardo IV da Camino, Count of Ceneda and Lord of Treviso.Nino was an important patron of literary culture.Dante Alighieri was a friend, and, in the eighth canto of his "Purgatorio", to his mild surprise, meets Nino in the region of Purgatory outside St. Peter's gate, where the souls of those who neglected their spiritual welfare for the sake of their country are detained for a period equal to their earthly lifetimes before beginning their purgation.