Jack Rentner (January 24, 1932 – February 11, 2025)
Jack K. Rentner passed away peacefully at home on Feb. 11, 2025. He was 93. He was co-owner of Rentner Marine Service in Chicago with his brother, Paul Rentner. Jack was an avid boater, tinkerer and fixer of many things, truly a "Jack of all trades." He was preceded in death by his wife, Doris, (nee Walhgren), his father, Paul E. Rentner, his mother Helen,