John S. Costa 86, formerly of Harwood Heights. Beloved husband of the late Rose. Loving father of John (Diane), Rick (Marge), Kenny (Linda), Timmy ( the late Christy) Mary (Mike) Di Tommaso. Fond grandfather of John, Joseph, Rick Jr., Lyssa, Nick, Jennifer, Becky, Michael Jr. and Johnny. Great grandfather Micheala, Christina, Scarlett, Lilliana, Joseph, Delaney and Lincoln. Funeral Mass was held Thursday 10:00 A.M. at St. Mary Church, Buffalo Grove.