Louis Todhunter Mellinger, 83, of Somerset, died February 10, 2023 at The Patriot, Born November 20, 1939 in Pittsburgh, he is the son of the late Frank Millin and Helen (Todhunter) Mellinger. Survived by his wife the former Barbara Eileen Maurer to who he was married 30 years, and children, Rebecca Kathryn Mellinger and husband Nikos Tzetos of Portland, OR, and Andrew O'Neill Mellinger married to the former Susan Salmon of Pittsburgh, grandchildren: Thalia, Clio, Virginia and Natalie, and sister Christine "Chrissy" LaVielle and husband Craig of Portland, OR, and foster brother Ronald Goens and wife Donna of Cincinnati, OH. Louis was a 1957 graduate of of Country Day High School and the University of Cincinnati. He worked until his retirement as a geologist for Commonwealth Contracting. He was a member of Lodge 358 F&AM, GSA, American Institute of Geologists, Yankanuck Club, and Somerset Alliance Church. Friends received 10-11 a.m,. Friday February 17, 2023 at the Hauger-Zeigler Funeral Home & Cremation Services, Somerset, where a service will immediately follow at 11 a.m. with Reverend Dr. Scott Ream officiating. Interment Beam Cemetery. In lieu of flowers contributions may be made to Somerset Alliance Church 708 Stoystown Road Somerset, PA 15501. To leave a condolence please visit www.haugerzeigler.com