Patrick Tracy Jackson (August 14, 1780 – September 12, 1847) was an American manufacturer, one of the founders of the Boston Manufacturing Company of Waltham, Massachusetts, and later a founder of the Merrimack Manufacturing Company, whose developments formed the nucleus of Lowell, Massachusetts. Early life and education He was born in Newburyport, Massachusetts, the youngest son of Jonathan Jackson and his second wife, Hannah Tracy Jackson, who was the daughter of Irish-born merchant Patrick Tracy. He enjoyed more schooling than most young men in post-Revolutionary America, attending Newburyport public schools as well as the private Dummer Academy. Growing up in a commercial family, however, Jackson was anxious to prove his business acumen, so in 1795, at the age of fifteen, he served as an apprentice clerk to William Bartlett, a wealthy Newburyport merchant, and as captain's clerk to his elder brother Henry. He spent several years at sea on behalf of Bartlett and his brother Henry from 1799 to 1808, impressing experienced merchants and sea masters with his drive and knowledge of navigation and maritime commerce. He completed four trading voyages abroad between 1800 and 1807, which gave him the opportunity to gain "experience in the Eastern trade and a respectable capital base". Business career Jackson established himself in Boston as a merchant specializing in the East and West Indies trade. Despite curtailed shipping interests during the War of 1812, Jackson collaborated with brother-in-law Francis Cabot Lowell (1775–1817) to establish a textile factory in Waltham, Massachusetts, and founded the Boston Manufacturing Company with him and the other "Boston Associates" in 1813. The Waltham factory was the first to integrate all the steps of converting raw cotton into cotton cloth into one mill building. On February 10, 1818, Jackson, Daniel Pinckney Parker, and other members of the Boston Associates, were granted the charter of the Suffolk Bank by the Massachusetts General Court. Jackson, Parker, the other charter's holders, and the bank's directors met periodically from February 27 to March 19 at the Boston Exchange Coffee House to discuss the organization of the bank. On April 1, 1818, the bank opened for business in rented offices on State Street until the bank moved permanently to the corner of State and Kilby Streets (currently occupied by either 75 State Street or Exchange Place) on April 17. Jackson owned 300 shares of the bank. By 1820, the limited waterpower of the Charles River led