Theodore J. Demick Obituary
It is with great sadness that we announce the death of Theodore J. Demick of Seneca, Illinois, who passed away on September 17, 2025, at the age of 73, leaving to mourn family and friends. Leave a sympathy message to the family on the memorial page of Theodore J. Demick to pay them a last tribute.
He was predeceased by: his parents, John F. Demick and Clara Marie Demick (Theiler); and his wife Diane. He is survived by: his significant other Charlsie "Charlie" Holmes; his daughters, Carly Frederick (Eric), Heather Tesdal (Tim) and Cortney Hicks (Dave); and his grandchildren, Devan, Ashton, Emersyn Frederick and Gabriel Hicks.
Visitation was held on Thursday, September 25th 2025 from 3:00 PM to 6:00 PM at the Seals-Campbell Funeral Home (1009 E Bluff St, Marseilles, IL 61341). A prayer was held on Thursday, September 25th 2025 at 6:00 PM at the same location.
In lieu of flowers, please consider a memorial donation to the University of Chicago Medical Center or Pet Project in Ottawa.
