MASON, Jonathan, a Senator and a Representative from Massachusetts; born in Boston, Mass., September 12, 1756; completed preparatory studies in the Boston Latin School and graduated from the College of New Jersey (now Princeton University) in 1774; studied law; admitted to the bar in 1779 and commenced practice in Boston; member, State house of representatives 1786-1796; member, executive council 1797-1798; member, State senate 1799-1800; elected as a Federalist to the United States Senate to fill the vacancy caused by the resignation of Benjamin Goodhue and served from November 14, 1800, to March 3, 1803; resumed the practice of law; member, State senate 1803-1804; member, State house of representatives 1805-1808; elected to the Fifteenth and Sixteenth Congresses and served from March 4, 1817, until his resignation on May 15, 1820; again engaged in the practice of his profession in Boston, Mass., where he died November 1, 1831; interment in Mount Auburn Cemetery, Cambridge, Mass.