of Kent has two sons. King George V's Letters Patent of 30 November 1917 restricted the style Royal Highness and the titular dignity of Prince to the sons of the Sovereign, the male line grandsons of the Sovereign, and the eldest living son of the eldest son of the Prince of Wales. Great-grandchildren of the Sovereign in the male line enjoy the courtesy titles of the children of dukes. Therefore, the heir-apparent to the dukedom of Kent is George, Earl of St. Andrews (b. 1962). Lord St. Andrews married in 1988, and has three children. His son Lord Downpatrick (b. 1988) is second in line to his grandfather's peerages. When Lord St. Andrews succeeds, the dukedom will cease to be a Royal dukedom; as a great-grandson of a sovereign he will be styled His Grace The Duke of Kent. After Lord St. Andrews and Lord Downpatrick, the current duke's younger son Lord Nicholas Windsor is in remainder to the dukedom, as are the current duke's brother, Prince Michael of Kent, and his son, Lord Frederick Windsor. Duties The current Duke of Kent carries out numerous duties for the monarchy, both military and civil. As a Freemason, he is the Grand Master of the United Grand Lodge of England, and has served as the President of The Scout Association of the United Kingdom since 1975 and of the Royal Institution. He has performed a number of state visits to Commonwealth nations on behalf of the Queen. He has also acted as Counsellor of State. His Royal Highness is the Grand Prior (or Grand Master) of the Order of St Michael and St George. He holds numerous other appointments in the military. The Duke of Kent has been the patron of Endeavour, a national youth organisation, for 29 years. Coat of arms The coat of arms anciently associated with Kent is that of a rampant white horse upon a red field. This is primarily associated with the Kingdom of Kent and possibly the earldom as well. Today, this is seen on the Council of Kent's arms and flag. As a direct descendant of Queen Victoria, this is not the coat of arms of the present Duke of Kent. The coat of arms of the Duke of Kent consists of the following: Arms: those of the Royal Arms, differenced by a label of five points argent (silver, often depicted as white), the points