William Edward Theis Obituary
It is with deep sorrow that we announce the death of William Edward Theis (Braidwood, Illinois), who passed away on December 23, 2025, at the age of 68, leaving to mourn family and friends. 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 Edward Theis to show support.
He was predeceased by: his parents, Edward William and Mary Theis; his stepfather Richard Busch; his in-laws, Thomas and Carole Corcoran; and his close friend Michael Tunney.
He is survived by: his wife Mary Jo Corcoran; his children, Alyssa Covic (Luka) of Tinley Park, IL, Cara Theis of Reddick, IL and Edward Theis (Karissa) of Coal City, IL; his granddaughters, Isabella and Vivienne; and his brothers-in-law, Patrick Corcoran (Beverly), Michael Corcoran (Linda) and Timothy Corcoran (Mary Jo). He is also survived by many nieces and nephews.
