Born in Joy, Illinois, Mr. Duncan had previously lived in Illinois before moving to Hobe Sound over 30 years ago.
He was a proud veteran of the United States Air Force, and was an insurance agent for many years.
Mr. Duncan is survived by his grandchildren, Joshua Vallette; Nicole Vallette; Myles Carhartt, and William Vallette; niece, Sandra; son, Justin Lawrence; great grandson, Princeton and many other loving family members.
He was predeceased by his loving wife, Joann Duncan and daughter, Drusilla Jones.
A funeral service will be held on Friday, April 20 at 10:00AM at Aycock Funeral Home, Young and Prill Chapel in Stuart with interment to immediately follow at Riverside Memorial Park.
Dean will be receiving military honors at graveside.
All arrangements are entrusted to Aycock Funeral Home, Young and Prill Chapel in Stuart, FL.