In Memory
Dennis P. Grontkowski
Dec 18, 1946 - Aug 23, 2026
Dennis P. “Duck” Grontkowski, 79, of South Bend, Indiana passed away at 5:30 a.m. Sunday, August 23, 2026, in Holy Cross Rehabilitation and Wellness.
Dennis was born on December 18, 1946 in South Bend, Indiana to Edwin and Henrietta (Niespodziany) Grontkowski, and was a lifelong resident. He retired from the St. Joseph County Weights and Measures Department.
Dennis is survived by his sweetheart, Kathleen Mahoney. He is also survived by his sister-in-law, Rose Grontkowski; his nieces and nephew, Lynne (Alan) Wright, Laurie (Larry) Foor, Lee Ann (Chris) Paluzzi, Lisa (Jim) Reynolds, Leslie Keck and Dennis Edward John (Megan) Grontkowski; many great-nieces and great-nephews; and his extended family, Robbie (Mindy) Evans and Jennifer Prawat.
Dennis was preceded in death by his brother, Ronald Grontkowski.
A Catholic Funeral Service will be held at 3:30 p.m. Friday, August 28, 2026 in the Kaniewski Funeral Home, 3545 N. Bendix Drive, South Bend, Indiana. A visitation will take place from 1:00 p.m. until 3:30 p.m. Friday in the funeral home.
Dennis was a 1964 graduate of Washington High School and attended Purdue University. He was a Boilermaker True and True. Dennis was a member of M.R. Falcons and a former member of The Breezers and Four Lakes Country Club. He loved golfing. Dennis was a huge Chicago Cubs and Bears fan and enjoyed his trips to Las Vegas with the boys.
In lieu of flowers, memorial contributions should be directed to the American Diabetes Association.
08/26/2026 EJS
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