In 1980, Harlon's oldest son John became the second generation to graduate from John A. Gupton College, with the second son, Don, graduating the next year. The third generation of Allen’s graduated from John A. Gupton College. Specifically, in January of 2010, Robert Allen, John’s son, joined the business as a funeral director and embalmer, and in 2017 became the President and Manager.
In March of 1982, Allen Funeral Home officially opened its doors. At the Chamber of Commerce Ribbon Cutting that year, John Allen said, "We're very proud to be able to serve the families of Hamblen County. In doing this, we hope that our family can serve your families for generations to come."