Junius Spencer Morgan was born 14 April 1813 in Holyoke, Hampden County, Massachusetts, United States to Joseph Morgan (1780-1847) and Sarah Spencer (1787-1859) and died 8 April 1890 Monte Carlo, Monaco of injuries sustained in a carriage accident. He married Juliet Pierpont (1816-1884) 2 May 1836 in Boston, Suffolk County, Massachusetts, United States.
|Offspring of Junius Spencer Morgan and Juliet Pierpont (1816-1884)|
|John Pierpont Morgan (1837-1913)||17 April 1837 Hartford, Hartford County, Connecticut, United States||31 March 1913 Rome, Lazio, Italy||Amelia Sturges (1835-1862) Amelia Sturges (1835-1862) Frances Louise Tracy (1842-1924)|
|Sarah Spencer Morgan (1839-1896)|
|Mary Lyman Morgan (1844-1919)||5 November 1844 New York City, New York, United States||20 July 1919 London, Greater London, England, United Kingdom||Walter Hayes Burns (1838-1897)|
|Junius Spencer Morgan (1846-1850)|
|Juliet Pierpont Morgan (1847-1923)|