Andries (II), Theo, Frans (I), Hein, Herman and Jan were the grandchildren of Theo de Groen, who bought the company in 1895. They were the key contributors to the growth after the Second World War, and bought the brewery in Enschede. The family can be traced back to 1647 and has its roots in Cuijk. Both Andries (III) and Frans (II) son's were active in the brewery but have retired since the acquisition of SABMiller. Family de Groen is listed in the Quote 500 published by Quote magazine.
