David Sean Johnsen Obituary
With solemn hearts, we announce the passing of David Sean Johnsen (Elm Grove, Wisconsin), whose presence will be deeply missed, having departed on September 8, 2025 at the age of 59. Family and friends are welcome to leave their condolences on this memorial page and share them with the family.
He is survived by: his wife Maureen Johnsen; his daughters, Gabrielle Johnsen of Los Angeles, CA and Gwyneth Johnsen of Milwaukee, WI; his sibling's children, Connor Muth, Charles Muth, Frederick Muth (Hanz), Nikolai Muth, Charlotte Muth, Scarlett Muth and Aleksandra Muth; his in-laws, Mary Ellen and Frederick Muth; his siblings-in-law, John Muth (Mary), Daniel Muth (Alina) and Jacqueline Muth; his parents, Karen Johnsen and David Johnsen of Atlanta, GA.; and his sister Stephanie Smieja (Jason).
In lieu of flowers, memorial contributions may be made to the Alzheimer's Association (https://donorservices.alz.org) and/or the UW-Madison School of Engineering.
