I was a bit confused about the relationship between the tiara's owner Jane Heathcote-Drummond-Willoughby, 28th Baroness Willoughby de Eresby, and the Marchioness of Cholmondeley. Could someone explain it to me?
Also, here are a few pics I found of the tiara.
Rose Astor Van Cutsem, Baroness Willoughby's second cousin