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.
Baron Windlesham
Baron Windlesham, of Windlesham in the County of Surrey, is a title in the Peerage of the United Kingdom. It was created in 1937 for the Conservative politician Sir George Hennessy, 1st Baronet. He had already been created a Baronet, of Windlesham in the County of Surrey, in 1927. His eldest son, the second Baron, was a Brigadier in the Grenadier Guards. The latter's son, the third Baron, succeeded in 1962; a Conservative politician, he notably served as Lord Privy Seal and Leader of the House of Lords in 1974. In 1999 he was created a life peer as Baron Hennessy, of Windlesham in the County of Surrey, so that he could continue to sit in the House of Lords after the passing of the House of Lords Act 1999, which removed the automatic right of hereditary peers to a seat in the upper chamber of parliament. the titles are held by his son, the fourth Baron.The heir apparent is the present holder's son Hon. George Rupert James Hennessy (b. 2006)