Rennert, Charles J. on September 9, 2020 of Nesconset, LI. Formerly of Stony Brook, LI. Beloved husband of the late June. Loving partner of Marie Mahecha. Cherished father of Charles K. (Kanalya) and Christopher J. (Deirdre). Adored grandfather of Christopher and Kaylee. Dear brother of Richard. Reposing at O.B. Davis Funeral Homes, 4839 Nesconset Highway, Port Jefferson Station, NY. Visitation Friday, September 11th from 2-4 and 6-8 PM. Funeral Mass Saturday at 10:30 AM at Sts. Philp and James R.C. Church, St. James, LI. Entombment to follow at St. Charles Cemetery.