04/01/2026
Theresa Marie Renken
Theresa “Terry” M. Renken (nee Wianecki) was born October 13, 1939 at her parent’s home in the town of Kronenwetter, Mosinee, Wisconsin to the late Felix and Stella (Ogonowski) Wianecki. She was received into God’s kingdom of grace through the waters of Baptism in 1939 and received Holy Communion in 1952 at St. Paul Catholic Church of Mosinee. Theresa converted to the Lutheran faith and was confirmed in April of 1959.
Theresa graduated from St. Paul Catholic School in 1954 and from Mosinee High School in 1958.
During her high school years, Theresa worked as a “pinboy” at a Mosinee bowling alley, watched children in the summer, and worked the piece line at Rondo cheese factory in Mosinee.
Theresa met David Renken in 1957. On weekends, they would go dancing either at Colonial Ballroom or Schmidt’s Ballroom. They married on October 18, 1958. During the early years of their marriage, Theresa held various jobs including office work at Marathon Electric in Wausau, office work at Livingston’s Department store in Merrill, worker at the Gardners Bakery in Schofield, and as a waitress at Dick’s Riverside Supper Club in Merrill.
On December 26, 1962, Theresa and David bought their farm in the town of Pine River. During their 32 years of farming and raising three children, Theresa worked part-time at Northern Wire pieces/welding lines, Northern Door assembly line, 29 Super Market bakery, Badger Evergreens Farm making Christmas wreaths and garland, John Muir Middle School kitchen, and then she transferred to Maine Elementary School as the night custodian. The farm was sold in April 1995, and Theresa continued working at Maine Elementary School until she retired in July 2011 at the age of 71. Per Theresa, “I loved my job, the staff and all the children. That always made my day.”. After farming and well into retirement, Theresa played a major role in helping raise a grandson and a great-granddaughter.
Theresa enjoyed cooking and baking for her family and friends. She always made enough food to feed an Army. Theresa enjoyed planting and harvesting her garden, feeding the birds, tending to her indoor plants and outdoor floral gardens, decorating her home for the holidays, crafting, coloring, reading her Portals of Prayer, listening and watching Daniel O’Donnell sing, helping others in need, and spoiling her family with unconditional love. She cherished planning family gatherings, especially during holidays, and was always interested in following the lives of her children, grandchildren, and great-grandchildren.
Survivors include children Alan (Doreen) Renken of Merrill and Pam (William ‘Bill’) Switalski of Des Plaines, Illinois; grandchildren, Melissa (Jesse) Tessmer of Milwaukee, Chris (Robyn) Renken of Merrill, Jenna (Zach) Lezotte of Merrill, Anthony (Becky) Renken of Merrill, Matt (Ashley) Renken of Hudson, and Heather Young of Merrill; great-grandchildren, Mason, Caden, Emberly, Keaton, Lexi, Jersey, Braxton, Hunter, Harley, Kira and Erik; sister Rose Windorski of California; sister Pat Lahr of Wausau; brother Ray (Betty) Wianecki of Mosinee; sister-in-law Rosemary Wianecki of Eagle River; Carol Scheel of Wausau; Sharon (Lenny) Koziel of Wausau, and Mae Eckardt of Merrill; brother-in-law Marvin (Donna) Hartwig of Merrill.
Theresa was preceded in death by her husband David; son, Michael Renken; parents, Felix and Stella Wianecki; brothers Joe Wianecki and Stanley Wianecki; in-laws Ray Windorski; Janis and Jim Framke; Joyce and Jack Bitcon; Barbara and John Renken; Lorene Renken and Donald Eckardt; nephews John Wianecki; Rick Renken; and Doug Framke.
The funeral service will be held at 11:00 A.M. Saturday, April 11, 2026, at Trinity Lutheran Church, Merrill. The Rev. Scott Gustafson will officiate. Burial will take place at Merrill Memorial Park Cemetery. Visitation will be held from 4:00 P.M. until 7:00 P.M. Friday, April 10, 2026, at Trinity Lutheran Church, Merrill and again at the church after 10:00 A.M. Saturday. Taylor-Stine-Waid Funeral & Cremation Services, Merrill, is assisting the family.
The family requests that any memorials be given to Trinity Lutheran Church in memory of Theresa Renken.
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