Royal dukedoms in the United Kingdom
In the British peerage, a royal duke is a member of the British royal family, entitled to the titular dignity of prince and the style of "His Royal Highness" who holds a dukedom. Dukedoms are the highest titles in the British roll of peerage and the holders of these particular dukedoms are Princes of the Blood Royal. The holders of the dukedoms are royal not the titles themselves. They are titles created and bestowed on legitimate sons and male-line grandsons of the British monarch, usually upon reaching their majority or marriage. The titles can be inherited but cease to be called "royal" once they pass beyond the grandsons of a monarch. As with any peerage, once the title becomes extinct, it may subsequently be recreated by the reigning monarch at any time.
Richard Luce, Baron Luce
Lord Luce was appointed a Knight Companion of the Order of the Garter (KG) on 23 April 2008. The Order of the Garter is the highest Order of Chivalry in the United Kingdom and is in the personal bestowal of the Queen. The membership of the Order of the Garter is limited to 24 at any one time, and this number excludes the British Royal Family and foreign royal families who are members. The Order currently includes one former British Prime Minister, Sir John Major, as well as numerous British government ministers and senior members of the Royal Household.