Adlai Ewing Stevenson II (February 5, 1900 – July 14, 1965) was an American politician, noted for his intellectual demeanor and advocacy of liberal causes in the Democratic Party. He served one term as governor of Illinois and ran, unsuccessfully, for president against Dwight D. Eisenhower in 1952 and 1956. He served as Ambassador to the United Nations from 1961 to 1965.
Although Stevenson was born in Los Angeles, he was a member of a famous Illinois political family. His grandfather Adlai E. Stevenson I had been Vice President of the United States. His father, Lewis Green Stevenson, never held an elected office, but served as Secretary of State of Illinois and was considered a strong contender for the Democratic vice-presidential nomination in 1928. A maternal great-grandfather, Jesse Fell, had been a close friend and confidant of Abraham Lincoln; Stevenson often referred to Fell as his "favorite" ancestor. His mother was Helen Davis Stevenson.
Stevenson was raised in the small city of Bloomington, Illinois; his family was a member of Bloomington's upper class and lived in one of the city's well-to-do neighborhoods. In December 1912, Stevenson accidentally killed a 16-year-old friend while demonstrating drill technique with a rifle, accidentally left loaded, during a party at the Stevenson home.