Dennis Anthony Fenn

Dennis Anthony Fenn, affectionately known as Denny, was born on November 6, 1946, in Des Moines, Iowa. He passed away peacefully on January 26, 2026, in St. Peters, Missouri, leaving behind a legacy that will forever resonate in the hearts of his loved ones.

Denny’s professional journey was remarkable; he dedicated 37 years as an Aerospace Engineer at McDonnell Douglas, which would eventually become Boeing, contributing his vast expertise and passion to the field. He achieved significant educational milestones, obtaining a Bachelor's Degree in Aerospace Engineering from Iowa State University and later a Master's Degree in Operations Analysis from Stanford University. His intellect was evident in every facet of his life, and he embodied a rare blend of intelligence and kindness.

Beyond his career, Denny cherished his family above all else. He is survived by his two devoted sons, Michael Fenn and David (Nina) Fenn, who hold cherished memories of their father dearly close to their hearts. One of their favorite recollections remains the simple yet profound Sundays spent at the park, where Denny would joyfully engage with his boys, creating a foundation of love and care that continues to inspire them each day. There wasn't a single thing his sons didn’t love about him. He was a man of incredible integrity, whose influence will resonate with them throughout their lives.

Denny was also a beloved grandfather to three wonderful grandchildren—Austin Fenn, Avery Fenn, and Hannah Fenn—who brought him immense joy. His playful spirit and unwavering support were evident as he actively participated in their lives and interests. In addition to his immediate family, he is remembered by his brother, Jim Fenn, who shared in the love and laughter that Denny brought to their lives.

Denny's creativity extended into his hobbies; he loved reading, spending time with family, and diving into the world of computer programming. His talent as a creator shone brightly when he designed his own football game, even conceptualizing the intricate details like lacing the football. This personal touch led to a beloved family saying, as his sons often describe finalizing their own projects as "putting the laces on the ball," a heartwarming reminder of their father's ingenuity and playful nature.

His family will always remember Denny not just for his accomplishments but for his remarkable personality. He was super smart, very kind, loving, and devoted, known for his great sense of humor and an honesty that was truly unparalleled. Throughout his life, he showed a dedication to hard work that served as an inspiration to everyone around him.

Denny was proud of many achievements, but his marriage to Linda—who preceded him in death—and the two brilliant sons they raised together remained the pinnacle of his life. For 56 years, he and Linda shared a union filled with love, laughter, and unwavering support for one another, a testament to their deep bond.

As we reflect on the life of Dennis Anthony Fenn, we must remember the love he instilled in his family and the indelible mark he left on all who knew him. His laughter, warmth, and wisdom will continue to reverberate through the lives of his sons, grandchildren, and brother, creating an enduring legacy of love and integrity.