Hutton, where he spent two months, while the Marquess of Ormond collected funds to send the prince to his brother in Cologne. Thus, Henrietta Maria's attempts to convert Henry to Catholicism not only failed and angered the royalists and Charles II, but also completely ruined her relationship with her younger son. Henry remained with Charles in Cologne until 1656. In July 1655, their sister Mary visited them, then together they made a trip to Frankfurt, where they visited the fair incognito, although they did not manage to remain unrecognized. Prior to this, Henry had also visited Mary in the Netherlands a couple of times with his brother and alone. In 1656 the brothers left for Bruges, where Henry became a member of the Archers of Saint George. In December 1656, Henry became colonel of the "old" English regiment of the Spanish army and volunteered with his brother James to enter the service of the Spanish in 1657 in the Low Countries. The mother of the princes opposed: she believed that Henry was too young to become a soldier. The prince did not listen to her and fought side by side with his brother in the defense of Dunkirk on 17 June 1658, where both showed great courage. When the city fell, Henry managed to escape capture by gathering some of the scattered troops and making a desperate breakthrough through the enemy battle formations. In the battle, the prince lost his sword, and while Villeneuve, the equestrian of the Prince de Ligne, was looking for the lost weapon, Henry covered him with a pistol. On 26 February 1657 or 1658, Charles II knighted his brother, on 27 October 1658 he introduced him to his Privy Council, and on 13 May 1659 he restored to him the title of Duke of Gloucester and additionally bestowed him the title of Earl of Cambridge. Stuart Restoration and death Following the restoration of the monarchy in England in 1660, Henry accompanied his brother Charles II to his homeland; the costs of their trip were again paid by Parliament. Henry settled in the Palace of Whitehall and on 31 June 1660 he was already sitting in the House of Lords. On 13 June he was appointed Chief Steward of Gloucester, and on 3 July he became Ranger of Hyde Park. Early in September 1660, Henry contracted smallpox, an epidemic that raged in London. The prince died