William Joseph Sidesky Obituary
With profound sadness, we say goodbye to William Joseph Sidesky (Oconomowoc, Wisconsin), whose vibrant spirit touched the lives of many. William left this world on April 22, 2026 at the age of 89, leaving a void in the lives of so many people. Family and friends can send flowers and/or light a candle as a loving gesture for their loved one. Leave a sympathy message to the family in the guestbook on this memorial page of William Joseph Sidesky to show support.
He was predeceased by: his parents, Jeanette W Sidesky and Joseph J Sidesky; his wife Nancy Teresa Mark; his siblings, Isabel Devine (Jack) and George Sidesky; his parents-in-law, Peter Mark and Teresa Mark (Flannick); and his brothers-in-law, Peter Mark (MaryAnn), Jack Mark (Kay), George Mark (Pat), Joe Mark (Joan) and Gene Stefaniak.
He is survived by: his daughters, Beth Tobison (Cal), Julie Garton (Dan), Katey and Trish Lange (Dave); his grandchildren, Stephanie Tobison (Cal Hofmeister), Nicole Vidrine (Landon), Ben, Andrea (Eden), Claire Garton, Lauren and Mitchell Lange; and his sisters-in-law, Ann Stefaniak (Mark) and Betty Sidesky (Dzidra). He is also survived by many nieces, nephews and cousins.
