Dennehy – Ostrowski , Doreen. Beloved wife of the late Joseph M. Ostrowski. Loving mother of James B. Howland and Dawn L. Howland. Cherished grandmother of Jeremy, Justice and Jazmyn Howland. Devoted sister of Timothy E. (Maddaline) Dennehy, Thomas (Jeanne) Dennehy, and Donna (William) Clark. Fond aunt of many nieces and nephews. Memorial Mass, Saturday, December 14 at 11:00 a.m. at St. Gilbert Church, 301 Belvidere Road, Grayslake, IL. 60030. Interment Private. (773) 736-2300