Maurice R. Koesterer Sr. Obituary
Maurice R. Koesterer Sr. of Waterloo, Illinois passed away on November 9, 2026. Maurice, born on August 21, 1935 in Freeburg, Illinois, shared life alongside family, friends, and others. You can send your sympathy in the guestbook provided and share it with the family.
He was predeceased by: his son Maurice Koesterer Jr.; his parents, Edwin Koesterer and Vera Koesterer; and his siblings, Juanita Sturbe, Betty Cashman, Eleanor Gallas, Bernard Koesterer and Edwin Koesterer.
He is survived by: his wife Lois Koesterer; his children, Joseph M. Koesterer, Mary C. Hirsch (Dean), Thomas G. Koesterer (Susan) and William M. Koesterer (Tonya); his daughter-in-law Nancy Koesterer; his grandchildren, Ryan Hirsch (Andi), Nathan Hirsch (Carrie Moore), Lyndsay Ahrens (Tony), Kati Gotto (Austin), Michelle Vogt (Joel) and Bradley Koesterer; and his great grandchildren, Gwen Hirsch, Griffin Hirsch, Lorelei Hirsch, Willow Ahrens, Trace Ahrens, Braydin Gotto, Brynlee Gotto, Maren Vogt, Margaret Vogt and Monroe Vogt. He is also survived by nieces; nephews; and cousins.
Visitation will be held on Thursday, November 12th 2026 from 4:00 PM to 8:00 PM and on Friday, November 13th 2026 from 8:00 AM to 9:30 AM at the Quernheim Funeral Home (800 S Market St, Waterloo, IL 62298). A funeral service will be held on Friday, November 13th 2026 from 10:00 AM to 11:00 AM at the Peter & Paul Catholic Church (204 W Mill St, Waterloo, IL 62298).
As an expression of sympathy, the family prefers memorial contributions to: Gibault Catholic High School or SS Peter & Paul Catholic Church.
