The Bayards, Campbells and Pearsalls were leading merchant and business families of New York who where related by marriage. Several members were Loyalists during the American Revolution. Family members had business interests in England, the Caribbean and South America. The firm of LeRoy, Bayard & McEvers sold medicine, silk goods, liquor, earthenware, and tobacco to Peru; and bought and sold timber, spices, food, apparel, and hardware in addition to buying and selling land, managing farms, and performing banking functions. Leading members of the families represented are William Bayard, Duncan P. Campbell, Thomas Pearsall, Samuel Cornell, Herman LeRoy, and Jerome Sillem. Collection contains business and family correspondence; accounts and business papers; and land papers consisting of deeds and maps primarily related to New York City, New York State, and other east coast states.