was invited to marry John of Gravina, Philip's younger brother, by their elder brother, Robert of Naples. When she declined, she was kidnapped and brought to Naples. By long persuasion and threats, she was compelled in 1318 to consent to the marriage, whereupon Frederick Trogisio was sent to Achaea as a new baili. In 1320, Eudes IV, Duke of Burgundy, after several protests, agreed to sell his rights to Achaea and Thessalonica to Louis, Count of Clermont for 40,000 livres. However, Philip, financed by Philip V of France, bought the claims for the same sum in 1321. In the meantime, the refractory Matilda of Hainaut was brought before the Papal court in Avignon, where she revealed that she had secretly married the Burgundian knight Hugh de La Palice. Her marriage with John was annulled on the grounds of non-consummation, but the revelation of her secret marriage again furnished a pretext for the confiscation of Achaea by the Angevins. It was, of course, bestowed directly upon John of Gravina, in exchange for 40,000 livres, the price paid to the Duke of Burgundy. Matilda spent the rest of her unfortunate life as a prisoner of the Neapolitan state, to prevent the resurgence of her claim. Philip continued to plot the recovery of the Latin Empire, making an alliance in 1318 with his nephew Charles I of Hungary for that purpose, but to no effect. In 1330, the last of his sons by his first marriage died, returning to him the title of Despot of Romania. All his rights and titles passed on his death two years later to his eldest son by his second marriage, Robert of Taranto. Family Children of his first marriage (1294), with Thamar Angelina Komnene, which ended with a divorce (1309): Charles (1296–1315), Vicar of Romania, killed at the Battle of Montecatini Jeanne (1297–1323), married to Oshin of Armenia and then Oshin of Korikos. Philip (1300–1330), Despot of Romania. Maria (1302/04–1368), Abbess of Conversano. Beatrice (1305–1340), married to Walter VI of Brienne, titular Duke of Athens. Bianca (1309–1337), married to Infante Ramón Berenguer of Aragon, Count of Prades. Children of his second marriage (1313), with Catherine of Valois: Margaret (c. 1325–1380), married Francis of Baux, Duke of Andria. By Francis, she was the mother of James of Baux, Prince of Achaea and titular Emperor of Constantinople. Robert (1326–1364), Prince of Taranto, titular Emperor of Constantinople (as Robert II).