Among those arrested was the king's cousin Henry Courtenay, 1st Marquess of Exeter, his wife and 11-year-old son. Courteney's wife was released two years later, but their son spent 15 years in the Tower until Queen Mary released him. Except for the surviving Geoffrey Pole, all the others implicated were beheaded. Margaret was attainted. The possibility of an invasion involving Reginald via her south coast estates and her embittered relationship with Henry VIII precluded any chance of pardon. However, the decision to execute her seems a spontaneous, rather than a premeditated, act. According to the Calendar of State Papers, her execution was botched at the hands of "a wretched and blundering youth ... who literally hacked her head and shoulders to pieces in the most pitiful manner". In 1886 she was beatified by Pope Leo XIII on the grounds she had laid down her life for the Holy See "and for the truth of the orthodox Faith". Stafford Edward Stafford, 3rd Duke of Buckingham, combined multiple lines of Plantagenet descent: from Edward III by his son Thomas of Woodstock, from Edward III via two of his Beaufort grandchildren, and from Edward I from Joan of Kent and the Holland family. His father failed in his rebellion against Richard III in 1483 but was restored to his inheritance on the reversal of his father's attainder late in 1485. His mother married Henry VII's uncle Jasper Tudor, and his wardship was entrusted to the king's mother, Lady Margaret Beaufort. In 1502, during Henry VII's illness, there was debate as to whether Buckingham or Edmund de la Pole should act as regent for Henry VIII. There is no evidence of continuous hostility between Buckingham and Henry VIII, but there is little doubt of the duke's dislike of Thomas Wolsey, whom he believed to be plotting to ruin the old nobility. Therefore, Henry VIII instructed Wolsey to watch Buckingham, his brother Henry Stafford, 1st Earl of Wiltshire, and three other peers. Neither Henry VIII nor his father planned to destroy Buckingham because of his lineage and Henry VIII even allowed Buckingham's son and heir, Henry Stafford, 1st Baron Stafford, to marry Ursula Pole, giving the Staffords a further line of royal blood descent. Buckingham himself was arrested in April 1521; he was found guilty on 16 May and executed the next day. Evidence was provided that the duke had been listening to prophecies that