Photography
Official Obituary of

Marie F. (Sullivan) O'Brien

April 17, 1934 ~ September 25, 2025 (age 91) 91 Years Old

Marie O'Brien Obituary

Marie F. O’Brien (nee Sullivan)

Marie F. O’Brien, nee Sullivan, 91. Beloved wife of the late Thomas E. O’Brien. Loving mother of Mary (Ed) Winecki, Mike (Annette), Marty (Linda), the late John (Eileen), the late Steve (Nicole), Tom (Angela) and Barbara (Shandell) Hunter; devoted grandmother of Tom, Erin (fiancé Chris), Kevin, Kathleen, Stephen, Sean, Catherine, Philip, Brendan, Bridget, Connor, Myles, Molly, Matthew, John Paul, Simon, and Thomas. Loving sister of Philip (Barbara), the late Catherine (Edmond) McElligott, the late Gerald, and John (Margie). Dear aunt and friend to many. 

Marie was born and raised on the west side of Chicago to Dennis and Mary, nee McCarthy, Sullivan, natives of County Kerry, Ireland. Marie was a woman of deep faith who always had the door open, the kettle on, and Irish soda bread ready to be served. She will be deeply missed. Funeral Tuesday, prayers at 10:15 at Cooney Funeral Home to St. Zachary Catholic Church. Mass at 11:00am. Interment All Saints Cemetery. Visitation Monday 3 to 8 p.m. In lieu of flowers, masses preferred.


Services

Visitation
Monday
September 29, 2025

3:00 PM to 8:00 PM
Cooney Funeral Service

Funeral Mass
Tuesday
September 30, 2025

11:00 AM
St. Zachary Catholic Church
567 W. Algonquin Rd.
Des Plaines, IL 60016

SHARE OBITUARY

© 2026 Cooney Funeral Home. All Rights Reserved. Funeral Home website by CFS & TA | Terms of Use | Privacy Policy | Accessibility