London: Princess Eugenie, 27, another of the Queen's grandchildren, is to marry her long-term boyfriend, Jack Brooksbank, 31, Buckingham Palace announced on Monday.

The wedding will also take place in the autumn in St George's Chapel, Windsor, where Eugenie's first cousin, Prince Harry, is to marry his American actress fiancée, Meghan Markle, in May.

The Queen has to be seen to be even handed in dealing with all the younger members of the family. Eugenie and her elder sister, Princess Beatrice, 29, are the daughters of Prince Charles's younger brother, Andrew, the Duke of York, 57, who is divorced from his wife, Sarah Ferguson, 58, but remains on good terms with her.

The announcement, posted to Twitter with a new picture of the couple, read: "The Duke and Duchess of York are delighted to announce the engagement of Princess Eugenie to Jack Brooksbank. Her Royal Highness and Brooksbank became engaged in Nicaragua earlier this month. The wedding will take place in the autumn of 2018 at St George's Chapel in Windsor, with further details to be announced in due course."

Eugenie's choice of partner is rather more conventional than Harry's. Brooksbank, the son of an Etonian, did not go to university but was educated at £10,000-a-term Stowe school in Buckinghamshire and is a barman turned wine merchant. He is also the manager of a Mayfair nightclub.

His family tree is said to be "littered with earls, baronets, knights... and a couple of kings".

The couple attended Pippa Middleton's wedding last year - Pippa is the Duchess of Cambridge's younger sister - so they are part of the royal set.

Eugenie's mother, the Duchess of York, is also in the news because it was revealed at the weekend she is taking legal action against Rupert Murdoch's newspapers and seeking damages totalling £40m.

The Duchess was the victim of a sting perpetrated by Mazher Mahmood, the Pakistani-origin "investigations editor" of the News of the World. She claims she was duped into saying she could organise a business introduction to her husband for £500,000.

Murdoch has shut down the paper, while Mahmood, 54, nicknamed "the Fake Sheikh", was sent to jail for 15 months in 2016 after being found guilty of "perverting the course of justice" in a case involving pop star Tulisa Contostavlos.