In the 1730s, John Carlyle trained as an apprentice to
English merchant William Hicks in the port town of
Whitehaven. Hicks was a ship owner and traded with British colonies, there Carlyle learned to do business in the Virginia Trade. Hicks sent him as his
factor (agent) in America to work in
Virginia in 1741. Merchant agents were required to remain single since they had to travel extensively. He stopped working with Hicks and started his own ventures after his marriage with Sarah. Carlyle established himself as a merchant at Belhaven (original name of Alexandria), a settlement that had grown up around a
tobacco warehouse on the bluff overlooking the
Potomac River. Carlyle quickly met with financial success. The Hicks company did not allow their workers to get married, but that did not stop him, he married Sarah Fairfax in 1747 (she was cousin of
Thomas Fairfax, one of the most influential families in Virginia). He built his house between 1751 and 1753 in Alexandria, now is called
Carlyle House. He also owned thousands of acres of land throughout Virginia, including three plantations. His business ventures included trading with England and the
West Indies, retail operations in Alexandria, a
foundry in the
Shenandoah Valley, milling, and operation of a
forge. He also undertook a number of civic and religious positions typical of a man of his status. Carlyle was owner of 4 ships, 3 of them capable of crossing the Atlantic to sell his products to
France and Great Britain. The city of Belhaven was renamed to
Alexandria, Virginia in 1779. ==French and Indian War==