When Mary Ann Coffman was born on 5 January 1857, in Henry, Indiana, United States, her father, Joseph Coffman, was 46 and her mother, Rebecca Miller, was 42. She married Allurad C Rinker on 23 August 1874. They were the parents of at least 5 sons and 4 daughters. She lived in Fall Creek Township, Henry, Indiana, United States in 1860 and Salem Township, Delaware, Indiana, United States for about 40 years. She died on 25 September 1925, in Delaware, Indiana, United States, at the age of 68, and was buried in Saunders Cemetery, Daleville, Delaware, Indiana, United States.