Marilyn N. De Groot, nee De Roos, 89, of Cedar Lake, IN, passed away Friday, August 25, 2017. Beloved wife of the late George De Groot. Loving mother of Gregory (Bonnie) De Groot, Barbara (Barry) Henby, David De Groot, Glenn (Jayne) De Groot, and Brian De Groot. Proud grandmother of eight and great-grandmother of six. Dear sister of Tony(Carolyn) Kaufman and the late Mary Jane Fender. Dear aunt of several nieces and nephews. Preceded in death by her parents John and Rose De Roos. Visitation Tuesday, August 29, 2017 from 3:00-8:00 pm at Smits Funeral Home, 2121 Pleasant Springs Lane (Rt.30 & Pleasant Springs Ln.) Dyer, IN. Funeral Service Wednesday, August 30, 2017 at 11:00 am at the Smits Funeral Home. Interment Oak Ridge Cemetery – Lansing, IL. Memorial contributions may be given to Cedar Lake Fire Department - 9430 W. 133rd Ave., Cedar Lake, IN 46303. For further information please contact 219-322-7300 or visit our online guestbook and obituary at www.SMITSFH.com.