I can find no archive of the website Glamiscalling.org or whoissomersetbelenoff.com before 9th Jan 2020 on the Wayback machine. Further, there is no record of this woman or anyone with the name 'Belenoff' in Burke's Peerage. If she exists and is from the background claimed the family would be in Burke's Peerage. There is a Countess of Arran, she is quite public & easy to find. Earl of Arran is a title in both the Peerage of Scotland and the Peerage of Ireland. The two titles refer to different places: the Isle of Arran in Scotland, and the Aran Islands in Ireland. Banbury is in Oxfordshire, England and as far as I can see, is an extinct Earldom.
If this woman was a 'socialite' then there should be photos & interviews. My Husband is a huge Led Zeppelin fan, he has lots of books & memorabilia, rare photos etc. This woman is never mentioned & never pictured anywhere. A socialite in the 60s would be photographed & written about even if she later became a recluse.
The House of Wettin does exist, the dynasty is one of the oldest in Europe and can be traced back to the town of Wettin, Saxony-Anhalt. The Belgian & British Monarchs are the surviving branches but I cannot find any trace of anyone called Belenoff in connection to it.
As for the photo - be VERY careful! This website [link to thispersondoesnotexist.com (secure)] should give pause for thought... none of the people pictured are real, all imagined by AI, you can keep refreshing to see new images. There are also news articles written by AI!!
I am concerned that none of the quotes about her on the website, supposedly from people like Prince Charles & David Rockefeller, give actual sources. Most importantly, on the 'archives' of Glamiscalling.org if you click on October 2017... yes they appear to be saying they are behind 'Q' with the heading 'Windsor Tower, Unleash the Storm' where they have an image of a large 'Q' & instructions to “Begin posting and expect major impact. All shall awaken!” this may be a way to discredit us. Sorry but this is what I have found. Happy to be corrected if I am wrong.