Funeral Mass for Glennie Costello, 86, of Jefferson will be 10:30 am Tuesday, February 18, 2020 at St. Joseph Catholic Church in Jefferson, IA.  Interment will be at St. Joseph’s Cemetery, Jefferson, Iowa.  There will be a Rosary Service at 4:00 pm on Monday, February 17, 2020 at Slininger-Schroeder Funeral Home in Jefferson, followed by a visitation with the family present to greet friends until 6:00 pm.  Memorials are suggested to St. Joseph Catholic Church for local masses.