Philip Quandt, 74, of Centralia, passed away peacefully on Monday, March 9, 2026, at SSM Health St. Mary Hospital in Richmond Heights, Missouri, surrounded by his family. Phil was born September 26, 1951, in Salem, the son of Clarence Quandt and Helen (Kleiss) Quandt. On March 6, 1974, in Salem, Phil married the love of his life, Glenda “Gay” Geiler, and she preceded him in death on November 23, 2018.
Phil graduated from Kinmundy-Alma High School in 1969 and remained close with many of his classmates throughout his life. He especially enjoyed attending the monthly luncheons with the Kinmundy Class of 1969, where friendships continued to grow through the years. Phil worked for many years at the Centralia Correctional Center and was also the owner and operator of Phil’s Lawn Mower, serving many customers in the community. He was a member of St. Mary Catholic Church in Centralia and was a proud 4th Degree member of the Knights of Columbus. He faithfully served alongside his brother Knights and was especially known for helping cook at the Knights of Columbus breakfasts. It was there that some of the guys affectionately began calling him “Bacon.” Phil enjoyed spending time at the KC Hall with his fellow Knights, particularly on Friday nights and Sunday afternoons. He was always willing to volunteer whenever the Knights were asked to assist with church activities, including Autumn Fest and other parish events. Phil will be remembered for his generous spirit, dedication to his church and community, and the friendships he cherished throughout his life.
He is survived by his four sons: Mike Casseday and wife Tammy of Centralia, Bart Casseday and special friend Jenita Colclasure of Farina, Shane Quandt and wife Helen of Steelville, and Eric Quandt and wife Melissa of Walnut Hill; seven grandchildren: Adam Casseday, Amber Casseday, Zachary Cassedy, Leah Diss, Luke Smith, Keegan Quandt, and Aria Quandt; four great-granddaughters: Hadlea Casseday, Emma Casseday, Freya Casseday, and Maisyn Diss; his sisters: Theresa (Craig) Stiven of St. Charles, Illinois, Benita (Dean) Langenfeld of Centralia, Regina (Jim) VanGeem of Carol Stream and Angela (Randy) Schnake of Irvington. He is also survived by his brother-in-law and sister-in-law, Bryce and Shirley Geiler of Kinmundy, sister-in-law Dorothy Geiler of Kinmundy, his godsons: Tyson Simmons of Naperville and Derrick Schnake of Mt. Pleasant, South Carolina, and many beloved nieces, nephews, and cousins.
Phil was preceded in death by his wife, Glenda “Gay” Geiler Quandt; his parents, Helen and Clarence Quandt; his in-laws, Harry and Dolly Geiler; his brothers- and sisters-in-law, Bob Geiler, Betty and Ershal Jenkins, and Joyce and Lawrence Potter; his daughter-in-law, Janet Casseday; and his nephew, Kory Langenfeld.
A Mass of Christian Burial will be held on Wednesday, March 18, 2026, at 10:00 AM at St. Mary Catholic Church in Centralia, with Father Steven Pautler officiating. Phil will be laid to rest next to his wife at Evergreen Cemetery in Kinmundy, Illinois. Visitation will be held on Tuesday, March 17, 2026, from 4:00 PM to 6:00 PM at the Sutherland-Garnier Funeral Home in Centralia. In lieu of flowers, memorial donations may be made to St. Mary School and/or St. Mary Catholic Church. They will be accepted by the Sutherland-Garnier Funeral Home located at 235 North Sycamore Street, Centralia, Illinois 62801, (618)532-3523, who is honored to be of service to Phil’s Family. Online condolences may be made to the family by visiting www.sutherlandfuneralhome.com and the Funeral Home Facebook page. To send flowers or a memorial gift to the family of Philip Quandt, please visit our Sympathy Store.
