Fielding was born in Manhattan to Mantle Fielding (1837–1890) and Anne Margaret Stone (maiden; 1838–1906). He graduated from Germantown Academy in 1883 and went on to study architecture at the Boston School of Technology (MIT), reportedly for one year, likely between the fall of 1883 through the spring of 1884.
Fielding was born in Manhattan to Mantle Fielding (1837–1890) and Anne Margaret Stone (maiden; 1838–1906). He attended Germantown Academy and later studied architecture at the Boston School of Technology, which is now MIT, for approximately one year, spanning from late 1883 to early 1884.