Frederick J. Teffner Obituary

The memory of Frederick J. Teffner of East Peoria, Illinois, who passed away on January 31, 2026 at the age of 87, will forever remain in the hearts of those touched by this precious presence in their lives. Leave a sympathy message to the family on the memorial page of Frederick J. Teffner to pay them a last tribute.

He was predeceased by: his parents, Jacob Teffner and Julia Teffner (Dudas); his wife Donna Jean Hart; and his siblings, Robert Dudas and Mary Klein.

He is survived by: his daughters, Danielle Gleason of Gilbert, AZ and Jill Underwood (Keith) of Franklin, KY; his adoptive daughter Lisa Slocum; his grandchildren, Taylor and Jake Underwood; his sisters, Irene Marsh and Beverley Mauschbaugh; and his sister-in-law Patsy Dudas.

Memorial contributions may be made to the Susan G. Komen Foundation.