Jacob Crowninshield was born March 31, 1770, in Salem in the Province of Massachusetts Bay. As a young man, he went into partnership with three of his brothers commanding trade ships between the United States and India.[1][2]
In 1796, Crowninshield married Sarah Gardner, daughter of John (a direct descendant of an old planter) and Sarah (Derby, daughter of Richard (1712–1783)). Their daughter Sarah later married the Salem merchant Richard Saltonstall Rogers.[3]
Crowninshield was an unsuccessful candidate for election to Congress in 1798, to fill the vacancy caused by the resignation of Dwight Foster, but was elected to the Massachusetts Senate in 1801.
In 1805, Crowninshield was nominated to the position of U.S. Secretary of the Navy by President Thomas Jefferson, and was confirmed by the Senate, but he declined to take up the position, and continued to serve in Congress.[1][4]