France - Vitry sur Seine (Val de Marne) / Maintenon (Eure-et-Loir)
Son of Ferdinand, he succeeded his father in 1938; before and after the Second World War, he registered irises for his father. 1937, he moved to his account, turned to the wholesale trade. 1960: the compagny moved to Maintenon and his son Jean moved to his account in the region of Gien and focus on the culture of the iris. (see: Richard Cayeux, Histoire de la Maison Cayeux, Hommes et Plantes n° 25, 1998 or Iris et Bulbeuses, n°134, 1999, pp. 10-14).
Other members of the Cayeux family: Henri (uncle), Jean (son), Richard (grandson).