Cover photo for William "Bill" P. Klepec's Obituary
William "Bill" P. Klepec Profile Photo
1939 William 2022

William "Bill" P. Klepec

September 18, 1939 — November 10, 2022

William “Bill” Paul Klepec, age 83, passed away peacefully on Thursday, November 10, 2022.

Survived by his children: Jeffrey (Kimberly) Klepec, Daniel (Kelly) Klepec, Christopher Klepec, Rick Klepec, and Wendy (Timothy) Stanley; grandchildren Matthew, Luke, Jordan, Kaitlyn and Kylie Klepec, Allie (John Cameron), Madeline and Peter Klepec, Abigail Klepec, and Jacob and Cecelia Stanley; sister-in-law Christine Mammosser; nephews: Mark (Sara) Mammosser and Todd Mammosser.

Preceded in death by his beloved wife, Sylvia (nee Mammosser) Klepec (2019); parents, Julius and Sophie Klepec; sister, Sandra Klepec; brother, Raymond Klepec; brother-in-law, Roger Mammosser.

Born September 18, 1939. Bill grew up in Lockport and later enlisted in the U.S. Navy, serving four years for his country. After returning from the service, Bill met Sylvia, the love of his life, while spending time with some friends at a local Joliet hangout. On August 22, 1964, they were married at St. John the Baptist Catholic Church. Together they raised their family, and now together they are again.

Bill was employed by Weber Dairy and then worked in maintenance at Joliet Central High School for the majority of this career.

Bill was a devoted husband, father, and loving grandfather, always working hard and making sacrifices to benefit his family. In his spare time, Bill greatly enjoyed playing golf and took pride in being a member of the Hole in One Club. He was an avid movie watcher and a life-long Chicago Cubs, Bears, and Bulls fan. Perhaps even more he loved cheering on the Fighting Illini. Bill especially enjoyed taking road trips and family vacations to various places around the country, renting homes for the whole family, well into his children's adult lives. Moreover, the family appreciated the time he spent planning these trips, as well as his great generosity. Bill was not just a father, but a friend who will greatly be missed.

Celebration of Bill’s life will begin on Tuesday, November 15, 2022 with visitation to be held from 8:30AM to 10:15AM with the procession departing shortly after for a 11:00AM funeral mass at St Mary Nativity Catholic Church, 706 N Broadway St, Joliet, IL. Cremation will follow in accordance to Bill’s wishes.

In lieu of flowers, memorial contributions may be made as gifts in Bill's memory to the Alzheimer’s Association of Joliet or to the Huntington's Society of America.

To order memorial trees or send flowers to the family in memory of William "Bill" P. Klepec, please visit our flower store.

Service Schedule

Past Services


Tuesday, November 15, 2022

8:30 - 10:15 am (Central time)

Tezak's Home to Celebrate Life

1211 Plainfield Road, Joliet, IL 60435

Enter your phone number above to have directions sent via text. Standard text messaging rates apply.

Funeral Service

Tuesday, November 15, 2022

Starts at 11:00 am (Central time)

Saint Mary Nativity Catholic Church


Enter your phone number above to have directions sent via text. Standard text messaging rates apply.


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