Mary Ann T. Pietrowitz, 83, of Sparta, NJ, passed away on May 10, 2023. She was the daughter of the late Carl and Theresa LoBue, and was raised in Elmwood Park, NJ, and later moved to Sparta, NJ, in 1976. She was also preceded in death by her brother, Joseph LoBue; sister, Patrica LoBue; and her son, Richard G. Pietrowitz, Jr. Mary Ann attended The Chubb Institute, where she then got a job at Picatinny Arsenal, as a Computer Analyst. She enjoyed reading, doing puzzles, watching romantic movies, and traveling. Her favorite place to go with her family was Walt Disney World; she loved spending time with her family, especially at all the many family gatherings. Mary Ann is survived by her husband of 61 years, Richard G. Pietrowitz, Sr.; children, Robyn (Paul) Harris, John (Tara) Pietrowitz, and Toni (Rob) Huber; grandchildren, Paul, Michael, Hailee, Kayla, Corrine (Alex), and Chelsea (Zac); great-granddaughter, Posie; brothers, Carl, Vincent, and Thomas; sisters, Jean, Bernadette, Frances, Karen, Theresa, and Nancy; as well as many nieces and nephews. At this time all family services will be private. In lieu of flowers, please make donations to St. Jude Children's Research Hospital or the Shriners Children's Hospital.