Amaziah Young was born around 1821 in Indiana to Ira and Elizabeth Young. His father was a farmer. He married a woman named Mary on August 27, 1840, in Ripley County, Indiana. They had at least four children: George, born around 1841; Rebecca, born around 1844; Elizabeth, born around 1851; and Rachel, born around 1855. They lived in Otter Creek, Indiana, and Young worked as a farmer. By 1850, he owned $600 of real estate. In 1860, he was living in his brother Ira’s household in Otter Creek, while his family was living in Brown, Indiana.
Young enlisted in the Union army on October 15, 1861, and he mustered in as a private in Company A of the 37th Indiana Infantry later that day. He was discharged for disability in Nashville, Tennessee, in 1863. Young returned to Indiana after leaving the army. By 1870, he and his family were living in Shelby, Indiana. Young was working as a farmer, and by 1870, he owned $4,500 of real estate and $500 of personal property. He and Mary got divorced sometime in the 1870s. By 1880, he was living in his daughter Rachel’s household in Johnson, Indiana. He applied for a federal pension in April 1884 and eventually secured one. He died on September 27, 1906, in Ripley County.