Mary Jo Heintzelman, 60, passed away Thursday, June 24, 2021 at her home in Grabill, IN. She was born in Fort Wayne to the late Raymond and Edith Maddex. Mary worked for several local companies and operated her own greenhouse. She was a proud supporter of the Leo American Legion Post 409. Mary is survived by two sons, Justin Heintzelman and Ethan Anderson; two grandsons, Chris and Justin Jr.; three sisters, Ellen, Carlotta, and Paula; and brother, James. Mary was also preceded in death by her brother, Wayne. Service is 4:00 pm, Wednesday, June 30, 2021 at Fairhaven Funeral Home and Cremation Services, 6557 N. Clinton St., with calling two hours prior beginning at 2:00 pm. A private burial service will take place at a later date. Memorials may be made to Cancer Services of N.E. Indiana. To sign the online guestbook, go to www.fairhavenfortwayne.com.