William Jay was an American reformer, jurist, and son of  an American statesman who directed U.S. foreign policy for much of what decade?
William Jay (jurist): William Jay (16 June 1789 – 14 October 1858) was an American reformer, jurist, and the son of Founding Father and first U.S. Supreme Court Chief Justice John Jay (1745–1829). John Jay: John Jay (December 23 [O.S. December 12] 1745 – May 17, 1829) was an American statesman, Patriot, diplomat, one of the Founding Fathers of the United States, signatory of the Treaty of Paris of 1783, second Governor of New York, and the first Chief Justice of the United States (1789–1795). John Jay:  He directed U.S. foreign policy for much of the 1780s and was an important leader of the Federalist Party after the ratification of the United States Constitution in 1788.
1780s