George Sanderson Gibson (1800–72), physician, was the second son of Patrick Gibson, TJ’s business agent and frequent correspondent. Born in Richmond, he was educated in England and Holland. Gibson returned to the United States by 1819, took up the study of medicine, and received his medical degree from the University of Maryland in 1823. He settled thereafter in Baltimore, where he remained in private practice for forty years, reportedly declining a number of professorial positions in order to concentrate on his patients. Gibson was active in both the temperance and colonization movements, and he served as treasurer of the Medical and Chirurgical Faculty of Maryland, 1836–38. He owned two slaves in 1840, and his estate was estimated to be worth $85,000 in 1860 and $150,000 a decade later. Gibson died in Baltimore (American Medical Association, Transactions 23 [1872]: 590–1; Vi: Gibson Family Papers; Eugene Fauntleroy Cordell, Historical Sketch of the University of Maryland School of Medicine [1891], 176; Baltimore Patriot & Mercantile Advertiser, 23 Apr. 1823, 21 Dec. 1831; Maryland State Colonization Society, Board of Managers, Annual Report 7 [1839]: 2; Cordell, The Medical Annals of Maryland, 1799–1899 [1903], 734; DNA: RG 29, CS, Md., Baltimore, 1840–70; Baltimore Sun, 1 Feb. 1872; gravestone inscription in Westminster Burial Ground, Baltimore).