Marilyn Kroc Barg was a kind and giving woman who was best known as the daughter of Ray Kroc, the man who made McDonald’s a worldwide fast-food chain. But Marilyn’s life was about a lot more than just her famous family link. She made a lasting effect through her hard work in charity, especially by helping to start Ronald McDonald House Charities, a group that helps families with seriously ill children and gives them a place to live.