JOHN "JACK" CULLION DeWITT, JR. Jack, 72, of Oakdale, died Saturday, June 20, 2020, in UPMC East, Monroeville. He was born on August 17, 1947, in Natrona Heights, a son of the late John C. DeWitt and Mary Theresa Frantz DeWitt. After completing a tour in Vietnam as corpsman in the US Navy, Jack earned a bachelor's degree in Psychology from Duquesne University and a master's degree in social work from the University of Pittsburgh. Jack was retired from Mercy Hospital as a licensed social worker and spent his career supporting numerous social work programs throughout the Pittsburgh area. He was also a member of Holy Trinity R.C. Church, the National Association of Social Workers and the Coraopolis Sportsmen's Association. He enjoyed fishing and camping in his free time. Surviving are his son, Nathan (Mary) DeWitt of Atlanta, GA and his daughter, Kristen DeWitt of Philadelphia; sisters, Paula Dee (Edwin) Murray of Butler and Elaine DeWitt of Tarentum; brother, Christopher (Patty) DeWitt of St. Petersburg, FL. He was preceded in death by his brother, Michael DeWitt. Friends will be received on Saturday, June 27, 2020, from noon - 2 p.m., at THOMAS-LITTLE FUNERAL SERVICE, INC. AND CREMATORY, 5000 Noblestown Rd., Oakdale (724-693-2800). Following the viewing, a blessing service will be held at 2 p.m. in the funeral home. Inurnment will be at the National Cemetery of the Alleghenies at the convenience of the family. To better ensure the safety of the family, the funeral home asks that you comply with the Centers for Disease Control guidelines and please wear a mask while in the building, practice social distancing and wash your hands frequently. Please sign the guestbook at thomas-littlefuneralservice.com. Send condolences post-gazette.com/gb