Garsington Manor is located near the home of the son of what American-British billionaire philanthropist?
Garsington Manor:  The house is currently owned by the family of Leonard Ingrams and from 1989 to 2010 has been the setting for an annual summer opera season, the Garsington Opera, which relocated to Wormsley Park, the home of Mark Getty near Stokenchurch in Buckinghamshire, in 2011.
i don't know