March 27, 1859, Charlestown, Massachusetts.
1953, Orange County (possibly Orlando, where lived at least 15 years), Florida.
Raised in the Swedenborgian denomination, Badger was educated at Williams College (AB 1883), Andover Newton Theological School (1883–84), and Harvard Divinity School (STB 1886). After converting to Unitarianism, Badger was ordained in 1886 as the Unitarian pastor in South Natick, Massachusetts, staying there until 1892. He went on to serve pastorates in New Jersey, Texas, and Florida, and retired in 1936. Badger also founded The New Unitarian, and edited it for 10 years.
He married Alice S. Hamilton, and had two daughters, Evelyn Payton and Elizabeth A. Badger. His works include: