Edward Augustus Crowninshield was born 2 February 1817 in Cambridge, Massachusetts, United States to Benjamin Williams Crowninshield (1772-1851) and Mary Boardman (1778-1840) and died 20 February 1859 Boston, Suffolk County, Massachusetts, United States of unspecified causes. He married Caroline Maria Welch (1820-1897) 15 January 1840 in Boston, Suffolk County, Massachusetts, United States.
|Offspring of Edward Augustus Crowninshield and Caroline Maria Welch (1820-1897)|
|Edward Augustus Crowninshield (1841-1867)|
|Francis Welch Crowninshield (1843-1866)||12 May 1843 Boston, Massachusetts, United States||21 May 1866 Rome, Italy|
|Frederic Crowninshield (1845-1918)||27 November 1845 Boston, Suffolk, Massachusetts, United States||13 September 1918 Capri, Naples, Italy||Helen Suzette Fairbanks (1841-1921)|