His son Knightly died in Barcelona, Spain in 1958. It appears that his estate may have been probated in England: "Probate Calendars of England & Wales", 16 Jun 1958, Orlebar, Knightley Vere , of Avenida Generalisimo Franco, Barcelona, Spain, died 24 Feb 1958. Probate granted at London to Barclays Bank, and William George Street, solicitor, effects £47819 5s 2d in England. Accessed at Findmypast (http://www.findmypast.com). Don't know if the probate papers are public record in the UK, but if so, his heirs, who would be grand or great grand children of Vere B. Worth a shot, maybe, but many hoops to go through!
