Rob Delaney remembers his late son Henry.

On May 28, the actor took to Instagram to share a throwback photo of his little boy who died in 2018 at the age of 2 after a cancer battle.

“Look at my beautiful little sleeping chunker,” wrote the disaster star in his moving homage. “He is 15 months old here and has just started chemotherapy. You can clearly see his tracheostomy tube here too.”

Rob explained that surgery to remove Henry’s brain tumor damaged the kid’s cranial nerves, affecting his ability to swallow and requiring him to have a tracheostomy.

“The things my wife and I had to learn to care for a year old with a complex tracheostomy …” recalled Rob. “But I wish the hell I would still do it every day. I miss taking care of him. Our son Henry.”

Doctors discovered Henry’s tumor in 2016, shortly after the child’s first birthday. He had surgery to remove the tumor and treated in early 2017. The cancer returned in the fall, however, and Henry died on the morning of Rob’s 41st birthday in January 2018.