Claim: Margot Frank's mother was a German businessman.
Evidence: Margot Betty Frank -LRB- February 16 , 1926 -- February 1945 -RRB- was the eldest daughter of Otto Frank and Edith Frank and the older sister of Anne Frank.
Otto Heinrich `` Pim '' Frank -LRB- 12 May 1889 -- 19 August 1980 -RRB- was a German businessman , who later became a resident of the Netherlands and Switzerland.