Shirley M. Kooyenga, nee Zylstra, age 90, of South Holland, IL, passed away peacefully Saturday, April 4, 2015. Beloved wife of the late Robert Kooyenga. Devoted mother of Keith (Donna) Kooyenga and Nancy (Elbert) Baker. Proud grandmother of 5; Great-grandmother of 11. Preceded in death by her parents Jacob and Mildred Zylstra. Visitation Tuesday, April 7, 2015 from 10:00 a.m. until the time of the funeral service at 12:00 p.m. Directly at Calvary Community Church (16341 South Park Avenue South Holland, IL 60473) with Rev. Alfonzo Surrett officiating. Private interment Fairmount-Willow Hills Memorial Park Cemetery - Willow Springs, IL. Arrangements entrusted to Smits, DeYoung- Vroegh Funeral Home, 649 E. 162nd St. (Rt.6/159th St.) South Holland, IL 60473. For further information please contact 708-333-7000 or visit our online guestbook and obituary at www.SMITSFH.com