JOHNSTONE, Robert M. Survived by loving wife Joan of 64 years, sister Eileen, 3 children, 8 grandchildren and 6 great grandchildren. Passed away September 24, 2017, at the age of 84. Visitation at Hodapp Funeral Home, 7401 Vine St., Carthage, Thursday 11:30 a.m. until funeral service at 1 p.m. Interment follows at Oak Hill Cemetery. In lieu of flowers, memorials may be made to FragileX.org.