Frank J. Sedlacek Sr. age 86, at rest on January 9, 2024. Beloved husband of the late Estelle (nee Johnson). Loving father of Frank Jr. (Mary) Sedlacek, Robert Sedlacek and Cindy (John) Stanovich. Cherished grandfather of Nicole (Michael) Majewski, Amanda (Cory) Walker, Jonathan Sedlacek and great grandfather of Madison, Jackson, Brooklyn, Reagan and Hailey. Dear brother of the late Thomas Sedlacek and Mildred (the late Errol) Moruzzie. Dear brother- in-Law of Raymond (the late Mary) Johnson, Patricia (the late Robert) Monzel, Barbara (the late Alfred) Skrundz and Margaret (the late David) Gill. Loving uncle to many nieces and nephews. Visitation will take place on Saturday, January 13, 2024 from 10:00 am until time of funeral service at 1:00 pm at Cumberland Chapels 8300 W. Lawrence Ave. Norridge, Il. Interment will follow at Bohemian National Cemetery in Chicago, Il.