MARQUAND, Frederick, merchant, born in Fairfield, Connecticut, 6 April, 1799; died in Southport, Connecticut, 14 July, 1882. He entered into business in New York city, was head of the house of Marquand and Co. jewellers and silversmiths, and retired about 1839, having become an extensive proprietor of real estate in the city. Mr. Marquand contributed to religious and charitable institutions, and bequeathed a large sum to similar enterprises. He gave chapels to the Union theological seminary in New York city, and to the theological department of Yale university.--His brother, Henry Gurdon, banker, born in New York city, 11 April, 1819, was educated in Pittsfield, Massachusetts, and engaged for twenty years in managing real estate, the property of his brother Frederick. Remarking the poor construction and faulty design of city architecture, he was among the earliest to become interested in its improvement, and was the first honorary member of the American institute of architects. For ten years he was a banker in New York city, and in 1868 became one of the purchasers of the Iron Mountain railroad, of which he was vice-president, and afterward president, until its incorporation in the Missouri Pacific system. He is a director in the latter company, and in many other corporations. He has devoted much time and attention to the Metropolitan museum of art in New York city, to which he has made numerous gifts and frequent loans from his valuable collection of paintings. Mr. Marquand presented a chapel and, with Robert Bonner, a gymnasium to Princeton college, and, with his brother, a pavilion to Bellevue hospital, New York city.--Henry Gurdon's son, Allan, educator, born in New York city, 10 December, 1853, was graduated at Princeton in 1874, continued his studies at the University of Berlin, and after his return in 1876 was for a year tutor at Princeton. He then became a fellow of Johns Hopkins university, and on taking the degree of Ph. D. in 1880 returned as tutor to Princeton, and in 1883 was made professor of the history of art. He is one of the editors of the "American Journal of Archaeology," has written on archeology and logic for various journals, and edited vol. iii. of the "Iconographic Cyclopedia of Arts."