their parents, the Earl and Countess of Wessex, wanted them to have more modest titles. The King reportedly wants to reduce the number of titled members of the royal family. By tradition, wives of male members of the royal family share their husbands' title and style. Princesses by marriage do not have the title prefixed to their own name but to their husband's; for example, the wife of Prince Michael of Kent is Princess Michael of Kent. Sons of monarchs are customarily given dukedoms upon marriage, and these peerage titles pass to their eldest sons. Male-line descendants of King George V, including women until they marry, bear the surname Windsor. The surname of the male-line descendants of Queen Elizabeth II, except for women who marry, is Mountbatten-Windsor, reflecting the name taken by her Greek-born husband, Prince Philip, Duke of Edinburgh, upon his naturalisation. A surname is generally not needed by members of the royal family who are entitled to the titles of prince or princess and the style His or Her Royal Highness. Such individuals use surnames on official documents such as marriage registers. Public role Members of the royal family support the King in his "state and national duties", while also carrying out charity work of their own. If the sovereign is indisposed, two counsellors of state are required to fulfil his role, with those notionally eligible being restricted to the Queen Consort, the Prince of Wales, the Duke of Sussex, the Duke of York, Princess Beatrice, the Earl of Wessex, and the Princess Royal. Each year the family "carries out over 2,000 official engagements throughout the UK and worldwide", entertaining 70,000 guests and answering 100,000 letters. Engagements include state funerals, national festivities, garden parties, receptions, and visits to the Armed Forces. Many members have served in the Armed Forces themselves, including the King's brothers and sons. Engagements are recorded in the Court Circular, a list of daily appointments and events attended by the royal family. Public appearances are often accompanied by walkabouts, where royals greet and converse with members of the public outside events. The start of this tradition is sometimes attributed to a trip Queen Elizabeth II made in 1970 to Australia and New Zealand. Queen Elizabeth The Queen Mother also interacted with crowds on a trip to Canada in 1939 and in 1940 during The Blitz in London. Annual events attended by the royal family include