Osian O'Sullivan, 43 passed away peacefully. Beloved son of Thomas A. Sullivan and the late Marion "Murphy" Sullivan (nee Hollenbach). Cherished nephew of the late Ginny and Jack Hague, Mary Ann and the late Peter Hollenbach, the late Timothy Sullivan; John P. Sullivan; and God son of Jane M. Sullivan. Adored cousin to Gregg (Louise) Hague, Molly Hague, Tim (Lori) Hague, Kathy (Giles) Lundberg, Danny (Tracy) Hollenbach, Rebecca and Miriam Hollenbach, Sarah Sullivan, Michael C.X. (Kelly) Sullivan, Michael Sullivan, Marisa Sullivan; friend to many. Family and friends will gather for a 12:00 Noon Mass of Christian Burial on Saturday March 5, 2016, at St. Luke Catholic Church, 528 Lathrop Ave., River Forest. Interment will follow in Forest Home Cemetery. Arrangements handled by Peter B. Kennedy - Woodlawn Funeral Directors. Info: 708-442-8500.