Buchanan, Walter Duncan was born on April 13, 1859 in Milwaukee, Wisconsin, United States. Son of John Mars and Jane McElderry (Douglass) Buchanan.
Bachelor of Arts, New York University, 1881, A.M., 1884. Graduate Union Theological Seminary, 1883. Doctor of Divinity, University of Omaha, 1896.
Doctor of Laws, Whitworth College, Spokane, Washington.
Ordained Presbyterian ministry, 1884. Pastor 7th Avenue Mission of 5th Avenue Church, 1883-1889, Chalmers Church, New York, 1889-1892, 13th Street Church, 1892-1899, Broadway Church (formerly 4th Avenue Church), since 1899. Home: New York, New York.