in order to ensure a further life free from matrimonial plans, she took a vow of celibacy on 13 July in the presence of the Bishop of London, Richard FitzJames. Being by nature very active, Catherine devoted the rest of her life to putting things in order in her possessions and those of her son. On 3 February 1512, she received from the king the right to use for life all the possessions of the late spouse in the Earldom of Devon. In February 1512, Catherine sent a petition to Parliament on behalf of her son, in which she asked to consider the issue of inheriting the title and possessions of his late father by young Henry Courtenay. The petition was read three times in the House of Lords, but consideration of the issue was postponed due to the need to discuss it with the king. The reason for the delay was the fact that some of Henry's ancestral property had been transferred by the king to the Courtenays before William was reinstated. Another reason was the claims to the possessions of Thomas Courtenay by the husbands of his co-heiresses sisters: Sir Hugh Conway (husband of Elizabeth Courtenay), and Sir William Knyvet of Buckenham (husband of Joan Courtenay). In October 1512, Catherine, through the mediation of the Bishop of London, managed to negotiate with both applicants: some lands were transferred to Conway for life use, and a life annuity of £177 was also promised; Knyvet's claims were withdrawn in exchange for a lifetime annuity of £200. In November 1512, Parliament approved the transfer of the title and lands of the late William Courtenay to his ten-year-old son Henry, and over time, Catherine's son joined the circle of those close to the king. She herself also enjoyed the favor of the king and she signed her letters and documents as "Princess Catherine, Countess of Devon, daughter, sister and aunt of kings". In addition, she adopted as her personal coat of arms the royal coat of arms of England, combined with the coat of arms of Courtenay and the addition of the arms of the Earls of Ulster and March. Settling the affairs of her son, Catherine did not forget about her only daughter: in 1512 she began to look for a groom for Margaret. Catherine sent letters to the royal servants with a request to determine the most profitable candidates for