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Adlai Stevenson I, also known as Adlai Ewing Stevenson, was the grandfather of Adlai Stevenson II. A prominent politician and public figure in the United States during the 19th century, Adlai Stevenson I served as the 23rd Vice President under President Grover Cleveland from 1893 to 1897. He was a member of the Democratic Party and is remembered for his contributions to American politics and public service during that era.