Background
Costello, Junior, John M. was born on June 3, 1951 in Atlanta, Georgia, United States.
Costello, Junior, John M. was born on June 3, 1951 in Atlanta, Georgia, United States.
Princeton University (Bachelor of Arts, 1973). University of Virginia (Juris Doctor, 1977).
Worked at Brown & Wood Limited Liability Partnership. Admitted to the bar, 1978, New New York 1979, California; 1983, District of Columbia.