This Is Us star Ron Cephas Jones, who was best known for playing William Hill on the NBC drama, has died at the age of 66.

According to People, a representative for the actor confirmed the news on Saturday, adding that Jones suffered from a “long-standing pulmonary issue.”

The actor appeared in all six seasons of This Is Us, scoring two Emmys for Outstanding Guest Actor in 2018 and 2020.

In the show, William Hill was Randall Pearson’s biological father. The series followed the Pearson triplets, Randall (Sterling K. Brown), Kate (Chrissy Metz) and Kevin (Justin Hartley), and their parents Rebecca (Mandy Moore) and Jack (Milo Ventimiglia), as they navigated deep emotional struggles together.

Dan Fogelman, who created the series, penned a heartfelt tribute to the actor in a post to X (fka Twitter): “A massive loss. Ron was the best of the best – on-screen, on stage, and in real life. The coolest. The easiest hang and laugh. And my God: what an actor. I don’t think I ever changed a single take of his in a cut… because everything he did was perfect.”

He continued in a second post: “I first got to know Ron at the start of This Is Us, a magical time when it felt like we were all being shot out of a cannon. He was always steady, always grateful – even as the madness swirled around us. He loved actors. He LOVED his daughter. And we loved him. All of Us.”

In addition to This Is Us, Jones appeared as Congressman Leon Kilbride in Law & Order: Organized Crime, Ron in Better Things, Professor Roger Dashmiel in Lisey’s Story, Dr. Hyde in Looking for Alaska, Bobby Fish in Luke Cage, Winston Kipling in The Get Down and Romero in Mr. Robot.

He can also be seen in The Blacklist, Law & Order: Criminal Intent and NYPD Blue, among others. His most recent endeavor was as co-star to Octavia Spencer in all three seasons of Apple TV+’s true-crime drama, Truth Be Told.

Jones appeared in several films as well, including Half Nelson, Across the Universe as well as the TV movie, A Raisin in the Sun, and more.

He leaves behind one daughter, actress Jasmine Cephas Jones.