Born on November 8, 1948, in Fairmont, Minnesota, Gardner grew up in Sherburn, Minnesota, and Savanna, Illinois. He considered his hometown to be Clinton, Iowa, where his mother, Mrs. Alice Gardner, resides. He lived with his second wife Sherry in Golden, Colorado and later in Divide, Colorado until his death. Gardner is also survived by his daughter Lisa Gardner-Hoefler, grandchild Isabella Hoefler and his sisters Peggy Janka and Kay Zipse. His father William and son Todd predeceased him. An avid sports enthusiast, he enjoyed snow skiing, golfing, tennis, woodworking and photography.