In this context Martha's father John, a major feudal lords of Occitan and, a vassal of the King of France, appeared in the eyes of King Peter and although they had been enemies during the War of the Two Peters, he was a good insurance against the Castilian threat. The count of Armagnac wished to strengthen its position in Occitan and in France and get a good ally against its rival, the Counts of Foix. Negotiations began in summer 1372 and of the marriage contract was signed on March 27, 1373 for the marriage of Martha to John, son of King Peter IV. The dowry amounted to the astronomical figure of 150,000 pounds. Martha was received with great solemnity at the border according to sources of Martin, John's younger brother.