David Rockefeller his graduate studies, he received a Ph.D. from the University of Chicago in 1940. After completing his studies in Chicago, he became secretary to New York Mayor Fiorello La Guardia for eighteen months in a "dollar a year" public service position. Although the mayor pointed out to the press that Rockefeller was only one of 60 interns in the city government, his working space was, in fact, the vacant office of the deputy mayor. From 1941 to 1942, Rockefeller was assistant regional director of the United States Office of Defense, Health and Welfare Services. Rockefeller enlisted in the U.S. Army
Justin Rockefeller Justin Rockefeller Justin Aldrich Rockefeller (born July 12, 1979) is an American impact investor and financial technology professional. Rockefeller was born on July 12, 1979, in West Virginia, the youngest son of former West Virginia senator, Jay Rockefeller (b. 1937), and his wife, Sharon Percy Rockefeller (b. 1944). Rockefeller's maternal grandfather was former U.S. Senator Charles H. Percy (1919–2011), and his paternal grandparents were Blanchette Ferry Hooker (1909–1992) and John D. Rockefeller III (1906–1978), the eldest son of philanthropists John D. Rockefeller Jr. and Abby Aldrich Rockefeller. Rockefeller is the Global Director of Family Offices and Foundations at Addepar, a