Donna Kertis, age 78, of Oshkosh, passed away peacefully in her sleep on March 7, 2026, after a long battle with congestive heart failure.
Donna was born April 19, 1947, to Steve and Amanda (Saeger) Kertis. She worked at Morgan Doors, Rockwell and Oshkosh Truck for many years. Later in life she bartended, did in-home care and most recently worked as a cashier at Walmart for the past 10 years.
She is survived by her son, Steve (Beth) Brewer and their children, Rey (Lita) and Aiden; her daughter, Amanda (John) Peterson and their daughter, Harper; and her great-grandchildren, Bryson Sobojinski, Reuben and Ivy Granberg. She is further survived by her brothers, Dale and Jim (Jeanette); sister-in-law, Kathy Kertis; her faithful companion, Moose the cat; and many nieces and nephews.
Donna was preceded in death by her parents; her sister, Birdine (Donald); brothers, Richard, Gil (Rachel) and Laverne (Carol) Kertis; her former husband, Richard Brewer; and her beloved fur companions, Tom, Sam and Buddy.
Per Donna’s wishes, no formal service or funeral will be held. A celebration of life will take place in early summer, and details will be shared closer to that time.
In lieu of flowers, donations may be made in Donna’s name to the Oshkosh Area Humane Society in her honor.