HARTZ- John J., of Deer Park, LI on June 21, 2022. Beloved husband of Janet. Devoted father of John (Deirdre) Joseph Hartz and Kerry (Jeffrey) Elizabeth Weir. Cherished grandfather of Jack and Grace Hartz and Mildred and Della Weir. Dear brother of Barbara, Rosemary, Noreen, Jerome, Joseph, and Regina. Reposing at The Fredrick J. Chapey & Sons West Islip Funeral Home, 1225 Montauk Hwy., (1/4 mile west of the Robert Moses Cswy.). Celebration of the Liturgy of Christian Burial Monday 9:15 AM at Ss. Cyril & Methodius R.C. Church, Deer Park, LI. Interment to follow at St. Charles Cemetery. Visiting Saturday 3:00 PM until 5:00 PM and 7:00 PM until 9:30 PM and Sunday 3:00 PM until 5:00 PM only. In lieu of flowers donations can be made to islandharvest.org.