

Then, on 18 February 1999, he married fashion designer Fiona Jane Mary Aitken, daughter of Ronnie Aitken and Frances Farmer they have one son:

Wilby and Princess Prospero Colonna di Stigliano ( née Frances Loftus). Wilby, daughter of racehorse owner Kenneth A. He succeeded to the title of Earl of Carnarvon when his father died on 11 September 2001 in Winchester, Hampshire. He was educated at Eton and St John's College, Oxford. Herbert was a Page of Honour to the Queen. His parents were close friends with Queen Elizabeth II, his godmother. His maternal uncle Malcolm Wallop, a rancher in Wyoming, served three terms in the United States Senate. His mother was born in Big Horn, Wyoming, the granddaughter to Oliver Wallop, 8th Earl of Portsmouth, who had not expected to inherit the title and moved to the American west to become a rancher. Herbert was born in Lambeth, London, the son of Henry Herbert, 7th Earl of Carnarvon and an American mother, Jean Margaret Wallop (1935–2019).

Carnarvon and his family live in part of the house, while the rest is used as a venue for hire and is also open to the public much of the summer and on some dates during other months. His family seat, Highclere Castle, has achieved notability as the primary filming location for the television series Downton Abbey. George Reginald Oliver Molyneux Herbert, 8th Earl of Carnarvon (born 10 November 1956), styled Lord Porchester from 1987 to 2001, is a British peer and arable farmer.
