Julie Montagu, Countess of Sandwich

Julie Montagu, Countess of Sandwich (née Julie Jean Fisher; born February 17, 1972), styled as Viscountess Hinchingbrooke from 2004 to 2025, is an American entrepreneur, yoga instructor, writer, and television personality. She is married to Luke Montagu, 12th Earl of Sandwich. Montagu began her television career as a cast member on the British reality series Ladies of London before hosting her own series on the Smithsonian Channel called An American Aristocrat's Guide to Great Estates. Since 2021 she has run her own series, American Countess, on YouTube.

Early life Julie Fisher was born on February 17, 1972, to Thomas Fisher, and was brought up in Sugar Grove, Illinois, as one of five siblings. She went on to study computer science at Indiana University where she became a member of Delta Delta Delta. Fisher moved to London to work for an internet-based company, and was working at a digital agency when she met Luke Montagu in 2003. At the time, she was a single mother with two children, and had assumed he was not interested in her.

Three months after they began dating, the couple spent a weekend on the Isle of Wight and she noticed that his credit cards read ‘Viscount Hinchingbrooke’. Only then did he explain that he was a member of the aristocracy and his parents were John Montagu, 11th Earl of Sandwich and Caroline Montagu, Countess of Sandwich. A year after they first met, they were married at Mapperton House in Dorset, the country estate of the Earl of Sandwich.

When Luke suffered years of side effects from being removed from prescription medication by an addiction clinic (and was later awarded £1.35 million in compensation), Montagu began running yoga classes in nearby church halls in order to bring some money into the household. By that time, Luke was unable to continue in his position as director of the Met Film School, so Montagu became the sole supporter. She founded the charity Council for Evidence-Based Psychiatry after Luke's recovery, based on their experiences.

She was then offered a position on the reality television series Ladies of London as her husband was recovering. She later said of the series, “We thought long and hard before accepting as it offered financial support for a while. But it was not fun to do. I was expected to behave in a way I wasn't, like an It girl or socialite, when I'm not. They edit you... You have to go along with things or you get fired. But you know it was a job. I was acting”. She celebrated when it was cancelled after three seasons. she was also an on-site commentator on the wedding for the BBC. She was also interviewed following such events as Markle’s father responding to a letter his daughter had sent him, and the Sussexes’ break from the monarchy in 2020.

In a 2017 interview, the couple were working to increase the business: “by attracting more visitors and more weddings. At the moment we host 12 a year but we are hoping to build that up to 40”. The cost of operating the Mapperton estate was £200,000 per annum at that time.

After appearing on their Million Dollar American Princess documentary series, she was asked by the Smithsonian Channel to host a new series to air in 2020, An American Aristocrat's Guide to Great Estates, which was also streaming on Amazon Prime Video in North America by March 2021.

On October 17, 2021, Montagu appeared on the CNN documentary series, Diana.

Since 2020, Montagu has run the YouTube channel American Countess, previously named American Viscountess prior to assuming the title of Countess of Sandwich, being travelogue tours of British country houses, accenting interviews, history, customs and culture.

Personal life She is married to Luke Montagu, 12th Earl of Sandwich, and has four children, She received a Master’s of Arts in Country House studies, passing with distinction, and her dissertation was titled "Redefining the American Heiress".

In February 2025, following the death of her father-in-law and the succession of her husband to the Earldom of Sandwich, Montagu assumed the title of Countess of Sandwich.