Joseph Marsh (1802–1863) was an American Millerite Protestant preacher, and editor of The Advent Harbinger, Bible Advocate and The Voice of Truth and Glad Tidings of the Kingdom at Hand".
When he was 16 the family moved to Genesee County, New York, where his parents were disfellowshipped by the Methodist Episcopal Church for rejecting the Trinity.
Following resignation from his pastorship and editorship, he supported Charles Fitch in the call for Millerites to leave established churches.
Thomas and Marsh now agreed in belief in a kingdom on earth and the restoration of Israel, but disagreed on whether this was essential for baptism.
Marsh and Nathaniel Field of Jeffersonville, Indiana in the Prophetical Expositor, and Thomas in the Herald of the Kingdom conducted an increasingly heated exchange of articles on whether the return of the Jews, and understanding of the promises to Abraham, was a prerequisite for a valid baptism, and therefore communion.
She was a frequent contributor to The Churchman and other publications of the Episcopal Church, and was the author of Toiling and Hoping, a novel (New York, 1856); The Boy Missionary (1859); Losing the Way (1860); Under His Banner (1862); The Morgan Boys (1859); Rochester, a Story Historical (Rochester, 1884); The Midnight Cry, a novel founded on the Millerite movement (New York, 1886); Life of S. F. B. Morse (1887); and Papers Relating to the Genesee Country (1888).
[9] Having rejoined the Christian Connection Marsh's death had little direct impact on the loose association of churches that subscribed to what was now Newman's magazine.
The American Civil War provided an impetus to define church boundaries, as in 1865 it was necessary to register for conscientious objection.