When Imola was stripped from them by Filippo Maria Visconti in 1424, they retreated to the countryside seigniory of Castel del Rio, in the Romagna Apennines, from which they were ousted in 1638 by Pope Urban VIII.
Born into a cadet branch of the family, he contested the seigniory of Ferrara to the young Niccolò III, an illegitimate son of marquess Alberto d'Este who was under the protection of Pope Benedict IX and Venice.
The seigniory which included Chambles, Périgneux, Saint-Marcellin and Saint-Rambert passed in the 17th century to the lords of Sury-le-Comtal, the De la Veuhes, and through them to the Sourdis family.
About three years later his seigniory of Saint-Simon in Vermandois was erected into a duchy, and he was created a peer of France.
In 1570, Jean Riqueti bought the château and seigniory of Mirabeau, which had belonged to the great Provençal family of Barras.
This was also short-lived, being replaced by the Quindici (Fifteen) reformers in 1385, the Dieci (Ten, 1386–1387), Undici (Eleven, 1388–1398) and Twelve Priors (1398–1399) who, in the end, gave the city's seigniory to Gian Galeazzo Visconti of Milan in order to defend it from the Florentine expansionism.
The Treaty of Kremmen was signed on June 20, 1236 by Duke Wartislaw III of Pomerania, recognizing the seigniory of the Brandenburg margraves over his Duchy of Pomerania-Demmin, and ceding the terrae Stargard, Wustrow and Beseritz to Brandenburg.