On July 10, 2024 Theresa B. Kellner (nee Derka) peacefully passed away surrounded by her family. Theresa was preceded in death by her late husband Louis E. Kellner; her parents Edward and Helen Derka; brothers Edward, Gerald, and Richard Derka. Theresa is survived by her son Michael L. Kellner and his wife Dorothy; grandchildren Megan Fratta and her husband Kyle, and Kristin Kellner; great grandchild Caroline Fratta; sister Margaret Shellenberger and brother Leonard Derka.

A funeral service will be held at the family owned Duda-Ruck Funeral Home of Dundalk, Inc. 7922 Wise Avenue on Monday July 15, 2024 at 10 AM. Friends may visit on Sunday July 14, 2024 from 3-6 PM. Interment Oak Lawn Cemetery.