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William Livingston of the Continental Congress supported the New Jersey plan and did not support Slavery.
http://supreme.lp.findlaw.com/documents/fathers/newjers.html
William Livingston was born on November 30, 1723.
William Livingston died on July 25, 1790 at the age of 66.
William S. Livingston was born on 1920-07-01.