Oliver David Horn, who we affectionately called Ollie died at home, in his bed with his mom and dad next to him on April 29, 2026. Ollie was born on July 11, 2018, right in the middle of Rachel and Max’s birthdays. From birth, Ollie was always a bright, sunny child. He rarely cried unless he was hungry, never ever napped and had a complete adoration for books from a young age. His favorites included the Hungry Caterpillar, Jamberry, Caps for Sale, the Little Blue Truck and many more. Ollie loved to smile. 

When Ollie was 9 months old, he was diagnosed with a rare and aggressive cancer of the brain and spine, AT/RT. Despite a dismal prognosis, Ollie defied every odd for over 7 years. He was a unicorn and forged his own path. The treatment for his cancer was so aggressive that it left him with many disabilities, yet that never stopped Ollie. He fought for the abilities many take for granted. Every new skill he gained, every new word he signed was always celebrated by himself and all of us around him who loved him. He worked hard and was proud of all he accomplished. 

Ollie gave us 5 years of stability, something that was very much not expected when he suffered his third relapse in 2021. Despite all the odds Ollie enjoyed five magical years. He went to school, took weekly horseback riding lessons, enjoyed swimming and tried skiing. Most importantly, he had the chance to make amazing memories with his 3 little brothers, Benji, Miles and Levi. His brothers were the love of his life. 

The other great love of Ollie’s life was music. Ollie especially loved the cello, with Bach being an absolute favorite. His legacy and the joy he found in music lives on with Ollie’s Orchestra. The nonprofit has gifted children and adolescents impacted by cancer with musical instruments and education. 

Ollie is survived by his parents, Rachel Krieger and Max Horn, his brother Benjamin, Levi and Miles and his cat Luna. He showed everyone he met how to enjoy life. He never complained about his challenges and instead taught us all to cherish life. Ollie is forever loved.  

Relatives and friends are invited to Funeral Services, Sunday, May 3rd, 11 AM precisely at Germantown Jewish Centre, 400 W Ellet Street, Philadelphia, PA 19119. Interment Roosevelt Memorial Park. Shiva will be observed Sunday from 4:00 – 6:30 PM at his home. Shiva will continue Monday and Tuesday from 4:00-6:30 PM each night at the home of Joan and Burt Horn. Contributions in his memory may be made to Ollie’s Orchestra or to Children’s Brain Tumor Network (CBTN)..