In April of 1992 John L. Van der Heyden registered a trademark for courses, trainings and education at the Benelux Trade Registrar in The Hague with the name Instituto Cervantes and founded the Foundation Cervantes Benelux. Four years later, on the 31st of July he invited the Crown Princes of The Netherlands, Belgium, Luxemburg and Spain to become the government of the foundation. The next day — the first of August — Van der Heyden went to England and lighted a candle at Canterbury Cathedral. From that time it became clear to him that Princess Diana was also interested in his project. How things developed from that time is explained in Letters to Diana, Princess of Wales. The story ends with the fatal kidnapping in Paris, exactly four weeks before Diana and Van der Heyden's proposed wedding day in The Netherlands.