- 1939 Frank Stenton Eardley, the Rector of St Giles
who wrote a history of Horsted Keynes, visits Cahagnes and is in correspondence with the Parish Priest there.
- 1966 Madame le Boucher, a long-time student of Norman history, travelled to Sussex with her son for the 900th anniversary of the Battle of
Hastings. They were brought to Horsted Keynes by General and Lady
Marshall-Cornwall whose son, a young Guards officer, was killed in Normandy after the D-Day landings and is buried in Cahagnes. She was shown round St Giles, the parish church by the Rector.
- 1969 Mr and Mrs Mercredy from Horsted Keynes were touring northern France and came across Cahagnes by accident. There they happened to meet Madame le
Boucher; she and Kay Mercredy determined to get the two villages twinned.
- 1971 the two villages were twinned with formal ceremonies in each village in spring and autumn of that year. The cabinet in the corner of the Village
Hall in Horsted Keynes was presented by the French delegation and the English planted a tree, a Sussex oak, in
May 1971. The Twinning Oath