When William Henry Harrison Hain was born in 1840, in Cass, Michigan, United States, his father, David Hain, was 34 and his mother, Margaret Ann Petticrew, was 28. He married Emily Wiley on 16 October 1861, in Cass, Michigan, United States. They were the parents of at least 5 sons and 5 daughters. He lived in Michigan, United States in 1870 and La Grange, Cass, Michigan, United States in 1910. He died in 1914, in Cass, Michigan, United States, at the age of 74, and was buried in Dailey Cemetery, La Grange, Cass, Michigan, United States.