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Early years

Cornelius Vanderbilt was born in Staten Island, New York, on May 27, 1794, to Cornelius van Derbilt and Phebe Hand. He began working on his father's ferry in New York Harbor as a boy, quitting school at the age of 11. At the age of 16, Vanderbilt decided to start his own ferry service. According to one version of events, he borrowed $100 (equivalent to $1,900 in 2023) from his mother to purchase a periauger (a shallow draft, two-masted sailing vessel), which he christened the Swiftsure. However, according to the first account of his life, published in 1853, the periauger belonged to his father and the younger Vanderbilt received half the profit. He began his business by ferrying freight and passengers on a ferry between Staten Island and Manhattan. Such was his energy and eagerness in his trade that other captains nearby took to calling him "The Commodore" in jest—a nickname that stuck with him all his life.

While many Vanderbilt family members had joined the Episcopal Church, Cornelius Vanderbilt remained a member of the Moravian Church to his death. Along with other members of the Vanderbilt family, he helped erect a local Moravian parish church in his city.

On December 19, 1813, at age 19 Vanderbilt married his first cousin, Sophia Johnson. They moved into a boarding house on Broad Street in Manhattan.

They had 13 children together: Phebe in 1814, Ethelinda in 1817, Eliza in 1819, William in 1821, Emily in 1823, Sophia in 1825, Maria in 1827, Frances in 1828, Cornelius Jeremiah in 1830, George in 1832 (who died in 1836), Mary in 1834, Catherine in 1836, and another son named George in 1839.

In addition to running his ferry, Vanderbilt bought his brother-in-law John De Forest's schooner Charlotte and traded in food and merchandise in partnership with his father and others. But on November 24, 1817, a ferry entrepreneur named Thomas Gibbons asked Vanderbilt to captain his steamboat between New Jersey and New York. Although Vanderbilt kept his own businesses running, he became Gibbons's business manager.

When Vanderbilt entered his new position, Gibbons was fighting against a steamboat monopoly in New York waters, which had been granted by the New York State Legislature to the politically influential patrician Robert Livingston and Robert Fulton, who had designed the steamboat. Though both Livingston and Fulton had died by the time Vanderbilt started working for Gibbons, the monopoly was held by Livingston's heirs. They had granted a license to Aaron Ogden to run a ferry between New York and New Jersey. Gibbons launched his steamboat venture because of a personal dispute with Ogden, whom he hoped to drive into bankruptcy. To accomplish this, he undercut prices and also brought a landmark legal case— Gibbons v. Ogden —to the United States Supreme Court to overturn the monopoly.

Working for Gibbons, Vanderbilt learned to operate a large and complicated business. He moved with his family to New Brunswick, New Jersey, a stop on Gibbons' line between New York and Philadelphia. There his wife Sophia operated a very profitable inn, using the proceeds to feed, clothe and educate their children. Vanderbilt also proved a quick study in legal matters, representing Gibbons in meetings with lawyers. He also went to Washington, D.C., to hire Daniel Webster to argue the case before the Supreme Court. Vanderbilt appealed his own case against the monopoly to the Supreme Court, which was next on the docket after Gibbons v. Ogden. The Court never heard Vanderbilt's case, because on March 2, 1824, it ruled in Gibbons' favor, saying that states had no power to interfere with interstate commerce. The case is still considered a landmark ruling. The protection of competitive interstate commerce is considered the basis for much of the prosperity which the United States has generated.