Mary Josephine “Jo” (Mack) Duffy, 80, of Lake Forest, IL, passed away on November 16, 2017. She was born in Grosse Pointe Michigan on September 19, 1937. Jo was an avid golfer, gardener, enjoyed nature and playing bridge and loved her family. She is preceded in death by her beloved husband Paul. Jo is survived by her children Mike (Ann Marie), Pam (Ben) and Kathy Gernady (Jeff). She is also survived by her grandchildren; Kayleen, Meghan, Patrick, Emma, Daniel, Karleen, Ryan and nieces Liz Brown and Amy Read. In lieu of flowers, donations may be made to the Parkinson’s Disease Research Society, NM Central DuPage Hospital, 25 N. Winfield Rd., 4 North Tower Winfield, IL 60190 or online www.parkinsonsprogress.org c/o of Dr. Michael Rezak. A funeral Mass will be held Saturday, November 25, 2017, 10 am at St Patrick’s Church, 991 Waukegan Rd, Lake Forest, IL 60045. Interment, Lake Forest Cemetery