Image Credit: Getty Images June Lockhart, one of television's most beloved matriarchs, has died at the age of 100. According to her family, Lockhart passed away peacefully at her home in Santa Monica, California, on October 23, 2025, surrounded by her daughter June Elizabeth and granddaughter Christianna. The Tony Award-winning actress was best known for her roles as Ruth Martin in Lassie and Maureen Robinson in Lost in Space, which made her a timeless symbol of warmth, wit, and grace. Following the news, tributes poured in from her former co-stars.