Born: December 20, 1819.
Dadmun was pastor at the Methodist Episcopal Church, South Hadley Falls, Holyoke, Massachusetts, 1845-46. He also served as prison chaplain at Deer Isle, off the coast of Maine. His works include:
- The Melodeon: A Collection of Hymns and Tunes, Original and Selected Music, Adapted to All Occasions of Social Worship (Boston, Massachusetts: J. P. Magee, 1862)
- Army and Navy Melodies: A Collection of Hymns and Tunes, Religious and Patriotic (Boston, Massachusetts: J. P. Magee, 1862)
- The Masonic Choir (Boston, Massachusetts: Ditson & Co., 1864)
Music
- Rest for the Weary