The de Groen family owned the Grolsch brewery in the Netherlands (founded 1615) from 1895 to 2008 before selling out to SABMiller for 800+ million Euros.
[1][2] 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.
Both Andries (III) and Frans (II) son's were active in the brewery but have retired since the acquisition of SABMiller.
In 2013 they invested in a special malt production facility, The Swaen [3] in the Netherlands.