Cover photo for Theresa C. Unnerstall's Obituary
Theresa C. Unnerstall Profile Photo
1934 Theresa 2022

Theresa C. Unnerstall

February 18, 1934 — September 5, 2022



Age 88, passed away on Monday, September 5th, 2022 at her home in Frankfort.

Theresa is survived by her loving family, husband, James Unnerstall, sons, Ronald (Allison) Unnerstall, Alan (Teresa) Unnerstall, sister, Rita (late Jerry) Robertson, grandchildren, Anna Unnerstall, Alex (fiancée Kristin Truesdale) Unnerstall, Nicklas Unnerstall, Samuel Unnerstall and numerous nieces and nephews.

Theresa was preceded in death by her parents, Walter & Helen Chapek (Sudinski), siblings, Bernard (Marie) Chapek, Lucille (Leo) Olen and Lorraine (Walter) Sieja.

Dedicated and loving spouse, mother and grandmother, Theresa’s heart was filled with love for her family and community. For 62 years, Theresa supported her husband, Jim, through his demanding work in the oil industry, while also raising two young children. Her volunteer work in schools, hospitals, humane societies, and resale shops made a lasting impact everywhere she lived from Indiana to Texas, to Wyoming to Illinois. In each location, she volunteered at hospital gift shops distributing flowers along with books & magazines. While her work was quiet, it did not go unnoticed.

In addition to her volunteer work, she enjoyed a life full of activities including golf, bowling, tennis, macrame, card game groups, cooking, and word games. She will be greatly missed.

The Unnerstall family would like to give special thanks to Tina and Marcella, Theresa’s caregivers the last few years.

In lieu of flowers, please make a donation in memory of Theresa Unnerstall to support Dr. James Mastrianni’s research on Dementia/Alzheimer’s at the University of Chicago Medicine. Checks may be made payable to the following address: University of Chicago Gift Administration and Business Data, Theresa Unnerstall Memorial, 5235 S. Harper Court, 4th Floor, Chicago, IL, 60615. You can also donate online at:

Family will receive friends at Kurtz Memorial Chapel, 65 Old Frankfort Way, Frankfort, IL 60423 on Friday, September 9th, 2022 from 3:00 PM to 8:00 PM. Funeral service, Saturday, September 10th, 2022 with prayers at the funeral home at 12:00 PM and then to St. Anthony Catholic Church, 7659 W. Sauk Trail, Frankfort IL 60423 for a Mass of Christian Burial at 12:30 PM. Interment will be held at a later date. For information, or 815-806-2225.

To order memorial trees or send flowers to the family in memory of Theresa C. Unnerstall, please visit our flower store.

Service Schedule

Past Services


Friday, September 9, 2022

3:00 - 8:00 pm (Central time)

Kurtz Memorial Chapel - Frankfort

65 Old Frankfort Way, Frankfort, IL 60423

Enter your phone number above to have directions sent via text. Standard text messaging rates apply.

Mass of Christian Burial

Saturday, September 10, 2022

Starts at 12:30 pm (Central time)

Enter your phone number above to have directions sent via text. Standard text messaging rates apply.


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