Prince Frederick Alexander von Preussen, son of Prince Andreas von Preussen, married the Hon. Antalya Nall-Cain, daughter of the 3rd Baron Brocket, over the weekend
, HERE. Prince Frederick Alexander is a grandson of
Prince Frederick of Prussia and Lady Brigid Guinness, a great-great-grandson of Kaiser Wilhelm II and a great-great-great-great-grandson of Queen Victoria.
The new Princess Antalya wore a Tiara which does not appear to be the Von Preussen Tiara, HERE, worn by his sister and cousins, so I would think that it is an heirloom from the Brocket family.