Born December 23, 1928 in Chicago, passed away peacefully February 4, 2015 in Barrington. John graduated from University of Illinois and Northwester University. He was an assistant comptroller with Commonwealth Edison for his entire career, retiring in 1992. John is survived by his children; Dr. John (Gigi) Heaster, Cynthia Margaret Heaster, and Linda (William) Conway, and six grandchildren. He was preceded in death by his loving wife Margurite, brother Don, and parents Mabel and Raymond Heaster. Memorial visitation will be 11am until the time of the memorial service at 2pm, Saturday, Feb. 7 at Davenport Family Funeral Home and Crematory, 149 W Main St (Lake-Cook), Barrington. Please visit www.davenportfamily.com to send online condolences. Call 847-381-3411 for information.