Marion Mongue

Marion Fox Mongue (“MM”) of Lake Zurich passed away peacefully, surrounded by family, on September 15, 2019, just two days shy of her 96th birthday. She lived a long and wonderful life.

Marion, born on September 17, 1923 in Milwaukee, Wis., was the second of five children born to Mildred and Conrad Fox. She graduated summa cum laude in 1945 with an accounting degree from the University of Wisconsin and proudly began her career in Chicago at the accounting firm of Ernst and Ernst. She married the love of her life, F. Joseph Mongue, on December 31, 1945, beginning her lifelong dream of becoming a wife and mother. Marion was a loving mom to Sande (Dave) Seibel of Onalaska, Wis.; Harry (Priscilla) Mongue of Cordova, Tenn.; Margaret (Thomas) Saelens of Bettendorf, Iowa; Robert (Deb) Mongue of Bellingham, Wash.; Michael (Un Hui) Mongue of Tacoma, Wash.; Susan Mongue of Sarasota, Flo.; Jennifer (Tom) Gustafson of Lake Zurich, Ill. She was a supportive and loving grandma to thirteen grandchildren, ‘Great One’ to seventeen great-grandchildren and was recently blessed with a great-great granddaughter.

Marion was a fiercely strong woman with beautiful blue eyes and an easy smile that would light up a room. She recognized what was important to those she loved and had the unique ability to connect with everyone in a personal way. It was one of her life’s missions to maintain and nurture friendships, new and old. Her happiest, most fulfilling moments were spent with her dear friends and her fun-loving family, including many cherished nieces, nephews and cousins. Whether it be road tripping, world traveling, cheering on her Badgers or simply playing games around the table, she was always the master fun maker. She even made learning to knit fun when she patiently taught her children, grandchildren and great-grandchildren to make treasures from a ball of yarn. She amazed and delighted everyone at her 90th birthday celebration at the Balloon Fiesta in Albuquerque by knitting scarves for each and every one of the 70 guests.

Marion spent her lifetime learning and challenging herself and became a successful accountant, teacher, and realtor. She was a voracious reader and had a thirst for knowledge with a wide range of interests. Education was so important to her that she selflessly donated her body to medical research to help improve the lives of future generations. As such, a service celebrating her life will be held at a later date.

In lieu of flowers, memorials can be made to Viterbo University, LaCrosse, Wis. The Sande Seibel Nursing Scholarship fund was established in memory of her daughter, Sande. Memorials may be given online at:

The school may be reached at 608-796-3078 for more information.