June Lockhart, a beloved actress recognized for her roles in television classics “Lassie” and “Lost in Space,” has died at the age of 100, according to a family spokesperson. The news was confirmed on Saturday.

Lockhart’s portrayal of the steadfast matriarch in the long-running series “Lassie” (1958-1964) cemented her place in television history. The show, which featured a courageous collie as its central character, captivated audiences with its heartwarming stories of family and adventure. Lockhart succeeded Elizabeth Montgomery in the role, bringing a new dimension to the character of Ruth Martin.

Beyond “Lassie,” Lockhart enjoyed a prolific career spanning decades. She later gained recognition for her role as the cool and collected Catherine “Ma” Blake in the science fiction series “Lost in Space” (1965-1968). This role further showcased her versatility and appeal to a broad audience. She regularly appeared in guest roles on various television series throughout her career, demonstrating her adaptability and enduring presence in the entertainment industry.

Born in Paterson, New Jersey, in 1925, Lockhart began her career in films during the 1940s, appearing in numerous productions before transitioning to television. Her dedication to acting and her memorable performances have left a lasting legacy in American television.