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’.

A year after they first met, they were married at Mapperton House, Dorset, the country estate of the Earl of Sandwich.

[4] 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),[5] Julie 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 Julie became the sole supporter.

[3] According to a June 2020 magazine article, Julie Montagu is a “qualified yoga teacher, nutritionist and mindfulness guru”.

[3] The series brought financial stability which allowed the couple to invest further in the Mapperton Estate, turning an old stable block into a wedding venue.

[14] 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,[15] which was also streaming on Amazon Prime Video in North America by March 2021.

[17] Since 2020, Julie Montagu has run the YouTube channel American Viscountess, being travelogue tours of British country houses, accenting interviews, history, customs and culture.