Robert Walter Heller, 88, of Waterloo, passed away June 16, 2023, in Waterloo. The visitation will be held from 4-8 p.m. on Tuesday, June 20 at Quernheim Funeral Home in Waterloo and from 10 a.m. until the time of service on Wednesday, June 21 at Holy Cross Lutheran Church in Renault. The funeral service will be held at 11 a.m. on Wednesday, June 21 at Holy Cross Lutheran Church with Pastor Royal Boeder officiating. Burial will be at the church cemetery.