in 1975, at the age of 83, Seymour Weller retired as President of the company. His cousin's daughter (and granddaughter of Clarence Dillon) Joan Dillon, then Princesse Charles de Luxembourg and later Duchesse de Mouchy, replaced him. In 1976, the 1970 vintage of Haut-Brion ranked fourth among the ten French and California red wines in the historic "Judgment of Paris" wine competition.