Hi Rory,
Took me a bit of flicking between pages but I finally found the medal roll that I was looking for -
I was thinking along the same line of Neville and wondering how a medal of this class has found its way out of the family, let alone Blenheim Palace. I do recall reading that Charles Spencer-Churchill was married twice, both to Americans which have ended in divorce. The first marriage resulted in two sons. Is there a link there somewhere which resulted in this QSA being for sale in Virginia, USA.