David Leo Niehaus, 76, of Baldwin, passed away on Thursday, Oct. 13, 2022 surrounded by his loving family. A Celebration of Life will be held Friday, Oct. 21 at 6 p.m. at The Church of Jesus Christ of Latter-Day Saints in Waterloo. Burial will be held at a later date at Jefferson Barracks National Cemetery in St. Louis, Missouri. Kutis Funeral Home in South County, St. Louis, MO, is in charge of arrangements.