In 1320 Guecellone concludes an agreement with Treviso, but the Della Scala they feel betrayed by this quick change of opinion and it opens a period of struggles with Cangrande della Scala, also because the Cangrande’ aims to possession of Belluno and Cadore, and following these contrasts, Guecellone makes the son Rizzardo to repudiate his own wife, Verde della Scala, and on 22 March 1322 he stipulates a marriage contract between Rizzardo and Anna, daughter of Otto II duke of Carinthia; the stipulation takes place publicly to “plebem in platea comunis” in Fregona.
On the way back from Verona, in July 1322, where he had gone for the peace negotiations with Cangrande, Guecellone is caught in a betrayal by order of the vicar of Padua (and probably of Cangrande) and kept in prison in Cittadella for eight months, but in the same year (1 August 1322) the bishop of Ceneda renews him the Investitures, among others, of the castle of Fregona.
The Castle of Fregona is mentioned again in the document with which in 1323 on 13 September the bishop of Ceneda, excommunicate Guacello and his son Rizzardo; excommunication that arrived from Pope John XXII that, according to the testament of Rizzardo brother of Guecellone , is expecting to receive some legacies, and getting not them, he send two of its responsible to “seize” the possessions of Da Camino.
In November of 1324 Cangrande occupies Cavolano, Serravalle, Formeniga and Fregona: Guecellone dies in the meanwhile, and Rizzardo VI Novello (Guacellone’s son) resumes his wife Verde della Scala, and his fiefs occupied by the uncle of his wife. In 1335 dies Rizzardo VI last of Da Camino di Sopra for wounds in battle in the meadows of Camolli at Sacile, and his wife Verde della Scala, pregnant, takes the tutelage of hers two daughters and of the unborn child: Verde however gives birth to another female and so the branch of the Da Camino di Sopra become extinct, with the danger that being Verde the sister of Alberto and Mastino della Scala, the Veronesi shall advance rights on inheritance. The Da Camino di Sotto go forward with their hereditary rights but also the bishop of Ceneda Ramponi thinks to take the fiefs because the investiture of the Da Camino comes, at least according to him, by the bishop of Ceneda.
So, on 12 October 1337, the Bishop assigns to three procurators of San Marco, Marco Morosini, Marco Giustiniani and Giustiniano Giustiniani of a certain number of fiefs ex da Camino, including Fregona and its castle; he sets aside half of incomes in exchange. The Da Camino Rizzardo IV and Gherardo not very satisfied with this move react in three ways: they get the investiture of the assets in question by the Bishop of Belluno Gorzia de Lusia and by the Patriarch of Aquileia (3 March 1339), they launch a lawsuit that they’ll win, and they planning up a conspiracy against the bishop with the support of the Patriarch of Aquileia. Regarding the conspiracy against the bishop, on 14 January 1340 Peter from San Lorenzo, employee of the bishop of Ceneda, denounces the conspiracy and shows a letter as a proof.
Fregona is at the center of the drama, a conspirator in fact says “will participate people favorable to Da Camino … from Fregona … ” and the conspirators meet at Fregona: “Between three days we go thou and I in Fregona to speak with your friend Ser Mino, …”. A subsequent document shows a questioning of the conspirators (16 February 1340) in which names are made: Joannes de Fregona, defined, together with a certain Guerzulus, “familiars domains Rizzardi de Camino” (familiars stands for servants with important roles or small vassals n.d.r.) and it is said that their “base” was Fregona from which they were travelling to Ceneda “came to Ceneda and returned to Fregona” to discuss the killing of the Bishop and the destruction of the castle of San Martino of Ceneda. The conspiracy forces the Bishop to take refuge in Venice for safety, and the dispute closes in 1343 when the procurators of San Marco, to avoid further riots, renounce to the investiture and the castle gets back in the hands of the Da Camino.