John H. Hart was born in Townsend, Massachusetts on July 22, 1801. He was the second son born to Daniel Hart Jr. and Mary (Marshall) Hart. John married Elizabeth Butterfield Lock of West Cambridge, Massachusetts on December 4, 183?. The John Hart family resided at Townsend, Massachusetts. Elizabeth died February 25, 1851, at only 45 years of age. John died three years later, in 1854. John and Elizabeth had nine children: John, 1831-1862; George, 1835-1925; Albert, 1837-?; Samuel Bailey, 1839-1843; Isaac, 1843-1872; Daniel A., 1843-?; William, 1845-1900; Edwin, 1848-?; and Caroline E., 1850-1857.
Townsend, Middlesex County
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