While Cameron Williams' cause of death has not yet been publicly shared, the Utah Foster Care board member had opened up about his battle with a brain tumor on his public Instagram feed, @Wicame. In one post, Cameron shared that he had undergone "three brain surgeries," and in another, he noted that doctors "took out the entire tumor," and "no cancer [was] detected."

According to his obituary, Cameron was just 33 years old at the time of his passing.

Lisa paid tribute to Cameron on her public Instagram feed. She listed out Cameron's accomplishments and she detailed his impact on one post.

"He loved building, helping, growing and has been an amazing brother to me," Lisa shared in part of her caption. "We love you, Cameron."

On another post, she shared what he had texted her on the day Season 1 premiered.

"He was always trying to motivate and help everyone," she added.

The Real Housewives of Salt Lake City airs on Sundays at 9 p.m. ET on Bravo.