Probably old news, but looking at the wikipage for Rothschild's Waddesdon Manor, it appears that at one time they had an 'ALICE TRUST', noted in the sources.
https://en.wikipedia.org/wiki/Waddesdon_Manor
https://apps.charitycommission.gov.uk/Showcharity/RegisterOfCharities/RemovedCharityMain.aspx?RegisteredCharityNumber=290859&SubsidiaryNumber=0