During long visits to South Africa, he painted three generations of the Oppenheimer family, among other prominent figures in industry.
The Oppenheimer family and its partners raised their bid for De Beers today after several major shareholders said they would oppose the original offer.
At least 40 percent of Anglo will still be owned by DeBeers and by the Oppenheimer family.
It said it would agree not to exercise control over the three companies and not to sell them to any companies affiliated with the Oppenheimer family.
The company doesnot own any steel producers, and the majority of the shares are held by the Oppenheimer family.
The Community Center at Gibney Beach was once the home of the Oppenheimer family.
Both companies are publicly traded, but each has long been controlled by the Oppenheimer family, and each owns about a third of the other's stock.
The Oppenheimer family served as his personal bankers.
The Foundation was established in 2005 by the Oppenheimer family to strengthen African economic performance.
Anglo American, he said, is "completely independent of the Oppenheimer family."