Thomas Main was the surviving partner of the merchant firm of Hyndman & Company, which had originally been started by his uncle, John Hyndman after 1756.
Citation(s):
Jacob M. Price, "The Last Phase of the Virginia-London Consignment Trade: James Buchannan & Co., 1758-1768," The William and Mary Quarterly 43, no. 1 (Jan. 1986):68-70.