ratified by the Spanish side. However, in April 1483, the princess's father suddenly died, and the negotiations were terminated. Edward IV's death was followed by a political crisis that dramatically changed the position of the former queen and her children. Catherine's older brother, Edward V, who succeeded to the throne, was captured by his uncle Lord Protector Richard, Duke of Gloucester, and Anthony Woodville and Richard Grey (Catherine's uncle and half-brother, respectively) who accompanied the young king, were arrested. The king was moved to the Tower of London, where he was later joined by his only full-brother, Richard; together with the rest of the children, among whom was Catherine, the dowager queen took refuge in Westminster Abbey. Two months later, on 22 June 1483, Edward IV's marriage to Elizabeth Woodville was declared illegal; all the children of the late king were declared illegitimate by the act of parliament Titulus Regius and deprived of the right to the throne and all titles. A few days later, Anthony Woodville and Richard Grey were executed. On 6 July 1483, Richard of Gloucester was proclaimed king under the name of Richard III; shortly thereafter there was no news of Catherine's brothers locked up in the Tower. On Christmas Day 1483, Henry Tudor, whose mother was plotting with Elizabeth Woodville against King Richard III, swore in Rennes Cathedral that he would marry Edward IV's eldest daughter, Elizabeth, or the next Cecily (if the marriage with Elizabeth for some reasons will be impossible) after he takes the English throne. However, the uprising of the Tudor party, led by the Duke of Buckingham, failed even before this oath. After the failure of Buckingham's rebellion, Richard III agreed to negotiate with his brother's widow, Elizabeth Woodville. On 1 March 1484, the king swore publicly that the daughters of his late brother would not be harmed or molested; in addition, Richard III promised that they would not be imprisoned in the Tower or any other prison, that they would be placed "in respectable places of good name and reputation", and later be married to "men of noble birth" and given dowry lands with an annual income of 200 marks each. The princesses moved under the care of their "gracious uncle", who gave them rooms in his palace. Tudor historian Edward Hall writes that Richard III "made all the daughters of his brother solemnly arrive at his palace; as if