Sarah Rafferty has appeared in many beloved series like “Suits,” “Grey’s Anatomy,” and “Chicago Med.” Up next, she’s set to star in Netflix’s “My Life With the Walter Boys,” in which she’ll play matriarch Dr. Katherine Walter, who is the mother of 10 boys and married to rancher George, played by Marc Blucas. Similar to her character, Rafferty is also a mom in real life. Rafferty and her husband, Santtu Seppälä, are the parents of two girls. Their oldest daughter is named Oona Gray, and…