Ellis died on July 8. He was 39.
Nelsan Ellis' friends and former co-stars are paying their respects.
The True Blood star was laid to rest at the Holy Temple Cathedral in his home state of Illinois on Saturday.
RELATED: 'True Blood' Star Nelsan Ellis' Funeral and Viewing Will Be Open to the Public
Several of Ellis' True Blood co-stars were among the 500 people at the event, including Anna Paquin, Carrie Preston and Rutina Wesley, according to the Chicago Sun-Times.
Viola Davis was also in attendance, even speaking during the ceremony, which Ellis' family opened to the public.
“He was like my baby,” Davis said. “When I saw that he was sick, I begged him to get better because I didn’t want to let him go. I still don’t want to let him go.”
Ellis died on July 8 at the age of 39, due to complications from heart failure. His family later revealed Ellis' struggles with alcohol and drug addition, sharing that he was "reluctant to talk about it during his life" but they believed that "in death he would want his life to serve as a cautionary tale in an attempt to help others."
RELATED: Octavia Spencer, Gabrielle Union and 'True Blood' Co-Stars React to Nelsan Ellis' Death
ET caught up with True Blood star Stephen Moyer at San Diego Comic-Con on Saturday, where he revealed that his wife, Paquin, was currently at Ellis' funeral "with a bunch of our gang."
"It's a really tough time," he added.
See more in the video below.
