Karl von Lewinski

His maternal grandparents were Dr. Carl Wilhelm Mayer, Privy Medical Councillor (German: Geheimer Sanitätsrat), and Wilhelmine Emilie Henriette Martins.

[6] After receiving his legal training, Lewinski became a court assessor in Breslau in 1903, and an assistant in the Ministry of Justice (German: Reichsjustizministerium) in 1905.

[5] Following the 1921 Treaty of Berlin, which officially ended the war between Germany and the United States,[8] Lewinski represented the Reich in the reparations negotiations from 1922 to 1931 at the German-American Mixed Claims Commission in Washington, D.C.[9][10] From 1925 to 1931, he succeeded Dr. Carl Lang to serve as German Consul General, First Class in New York.

In 1949, he moved to Washington, where he worked with the Office of Alien Property Custodian (within the U.S. Department of Justice) as an expert on international and private law issues at the request of the American government until his death in 1951.

[5] Lewinski was awarded an honorary Doctorate of Political Science by the Faculty of Economics at the University of Cologne in 1929 for his numerous publications, particularly in the field of American and international law, and his services to German-American relations.