Mary Lou was united in marriage to Richard Gruhn on December 29, 1956 in Phoenix, AZ and they had four children together. They were married for 38 years before divorcing in 1994. On August 24, 1996, Mary Lou was remarried to Larry McManis in Phoenix, AZ. Larry passed away in 2002, and Mary Lou moved to Titonka, Iowa several years later to live near her daughter Mary Beth and granddaughter Carrie.
Mary Lou loved music, and many will remember her playing the piano and organ at church and community events. She started playing piano when she was 5-years-old and began playing the organ for the church when she was 12. Her cousin, John Hobson, said that she was more talented as a child than anyone he's seen on America's Got Talent. She was even awarded a scholarship to The Juilliard School for music at 17, but the family could not afford for her to attend. Nevertheless, she continued to play music for others for almost 70 years. She also enjoyed playing cards, spending time with family, traveling, and especially taking cruises.
Mary Lou died on Monday, January 27, 2020 at Mercy One North Iowa Medical Center in Mason City due to heart failure. She was 82.
She is survived by her children, Mary Beth (Norm) Cooper of Titonka, Mark (Mary) Gruhn of Flagstaff, AZ, Michael (Janet) Gruhn of Dripping Springs, TX, and Robert Gruhn of Phoenix, AZ; grandchildren, Brian (Emily Skinner) Gruhn, Amber (Matt) Berg, Tyler (Jennifer) Gruhn, Meredith Gruhn, and Carrie (Joseph) Galvan, and great-grandson, Roan Gruhn Skinner.
Mary Lou was preceded in death by her parents, June and Wilbur, first husband Richard Gruhn, and husband, Larry.