Mark S. Kowalczyk, 67, of Sheridan, passed away on Monday, May 12, 2025, at his home.
A Celebration of Life will be held at a later date. Arrangements have been entrusted to the Mueller Funeral Home, Ottawa.
Mr. Kowalczyk was born on May 10, 1958, in Chicago to Aloysius and Eleanor (Grzeskowiak) Kowalczyk. Mark was a graduate of John F. Kennedy High School and later joined the US Marine Corps.
He is survived by his sister Dawn (John) Strukel; nieces, Jorie (Don) Fenske and Lyndsey Bullard; and great-niece and nephew, Madison and Zackary Aurenz.
You may sign the online guestbook and share remembrances at https://urldefense.proofpoint.com/v2/url?u=http-3A__www.MuellerFH.com&d=DwIFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=Yr6An7d5dZSfWVN6o_wDtYOQZ8mVj0oiymrmg2KFCFs&m=kpEvwvV7ezlGx7vdEvN4olTG3w5_LCFybEPerkU3Q6pvAvzt-YzJzklNvET3WNON&s=qh6AxqXu5w9MQSoo1Q809SB30uWVCUzhY6wJXhFKFDE&e=. Mueller Funeral Home and Crematory 800 First Avenue, Ottawa, IL 61350 815-434-4433