John Thomson Mason, Jr.

John Thomson Mason Jr. (May 9, 1815 – March 28, 1873) was a U.S. Congressman from Maryland, representing the sixth district from 1841 to 1843.

He was a judge of the Maryland Court of Appeals from 1851 to 1857, and afterwards a collector of customs at Baltimore, Maryland, from 1857 to 1861. He moved to Annapolis, Maryland, and served as Secretary of State of Maryland from 1872 until his death in 1873.

Death and interment Mason died on March 28, 1873, in Elkton, Maryland at age 57. He is interred in Rose Hill Cemetery (Maryland) in Hagerstown, Maryland.

Marriage and children Mason married Margaret Augusta Cowan in Alleghany City, Pennsylvania on December 14, 1842. The couple had four children:

Louise Gilmer Mason Terry (February 12, 1844–September 26, 1921) William Temple Thomson Mason (December 12, 1845–April 5, 1847) Elizabeth Mason Porter (born March 28, 1848) John Thomson Mason (born January 3, 1850)

Relations John Thomson Mason Jr. was a grandnephew of George Mason (1725–1792); grandson of Thomson Mason (1733–1785); nephew of Stevens Thomson Mason (1760–1803); son of John Thomson Mason (1765–1824) and Elizabeth Beltzhoover Mason (1781–1836); second cousin of Thomson Francis Mason (1785–1838); first cousin of Armistead Thomson Mason (1787–1819), John Thomson Mason (1787–1850), and James Murray Mason (1798–1871); and first cousin once removed of Stevens Thomson Mason (1811–1843).