Henry Clay Trumbull (1830-1903) was an American clergyman and author, born at Stonington, Connecticut, and educated at Williston Seminary, at Yale, and at the University of New York. He was ordained a Congregational minister, served as chaplain of the Tenth Connecticut Regiment in 1862-65, and was in several Confederate prisons. In 1875 he became editor of the Sunday School Times. His works include: The Knightly Soldier (1865), Children in the Temple (1869), Kadesh- Barnea (1883), The Blood Covenant (1885), Duty- Knowing and Duty-Doing (1889), Principles and Practices (1889), Studies in Oriental Social Life (1894), The Threshold Covenant; or, The Beginning of Religious Rites (1896), War Memories of an Army Chaplain (1898), Border Lines in the Field of Doubtful Practices (1899), The Salt Covenant (1899), Old-Time Student Volunteers (1902), Child Life in Many Lands (1903) and Personal Prayer (published posthumously, 1915).