Hayes, a young banker from a Tennessee family, met Margaret Davis in Memphis in 1873, and they married there on New Year's Day of 1876. Jefferson and Varina Davis soon became fond of their only son-in-law. The young couple bore the Davises five grandchildren, four of whom lived to adulthood.
In 1885 the Hayes family moved to Colorado Springs because of Addison's health. There he became quite successful, rising to the presidency of the First National Bank. He served on the boards of other financial institutions and was one of the organizers and president of the state bankers' association.
Addison outlived his wife by ten years, dying in Los Angeles in 1919. He is buried with the Davises in Richmond's Hollywood Cemetery.