Mary Louise Ostendorf, 76, formerly of Champaign passed away at 1:47 PM on Saturday, October 9, 2021 surrounded by family at son's home in Champaign. She was born on October 27, 1944 in Indianapolis, Indiana the daughter of Wesley and Gertrude (Wright) Flesner. She married Larry Ostendorf on December 22, 1962 in Urbana. He passed away on May 31, 2015. Mary is survived by her son- Brian (Dorsey)Ostendorf of Champaign; grandson-Kyle Ostendorf; great grandson- Logan. She is preceded in death by her parents, husband and daughter Lori Ostendorf. After graduating from Urbana High School, she worked as a secretary for 28 years for the University of Illinois. Mary was a member of Weber Street Church of Christ and she enjoyed reading and vacationing in Ft. Meyers Florida. Memorial contributions may be made to the American Cancer Society. Condolences may be offered online at www.renner-wikoffchapel.com