Frederick Marquand is one of the storied names associated with New York City silversmithing, having established the lineage which eventually became "Ball, Black & Co." and subsequently "Black, Starr & Frost." He is also associated with Savannah, Georgia where he spent some of his early working years.
This 6 9/16" long, heavy, 1.5 T. oz., probably youth fork is stamped "Marquand & Co." which dates it 1830-33.
It is a "Kings" pattern with a plain back...