Ingeburg Herz, along with her Ingeburg Herz Foundation and her sons Wolfgang and Michael and their families, own approximately 82.5% of the shares in maxingvest ag. The holding company owns Tchibo GmbH, purveyor of Germany's best-known coffee brand, and 50% of publicly traded skincare company Beiersdorf AG, whose brands include Nivea. Tchibo was founded 1949 by Ingeburg's husband, Max Herz, and his partner, Carl Tchiling-Hiryan, Oldest son Guenter took the reins after Max, the son of a coffee importer, died in 1965, and along with brother Michael built upon Max's idea of opening stores where coffee could be both sipped and sold over the counter -- a forerunner to Starbucks. (Ingeburg used to help Max scout out locations for new stores.) Tchibo became a retailing force as a wide range of other consumer goods and services were added to the mix. A family feud heated up after Guenter advanced a plan to take the company public to raise money for acquisitions and fortify itself against deep-pocketed competitors. In 2003, Ingeburg helped facilitate a resolution by supporting a buyout of interests held by her daughter, Daniela, and Guenter, who together received around $5 billion. Another son, Joachim, died in 2008 after being hit by a boat while swimming in a lake in Georgia. His interest in the family fortune passed to the charitable Joachim Herz Foundation.