View gallery Image Credit: Getty Images One of Catherine O'Hara's biggest roles was playing Kevin McCallister's mom in the first two Home Alone movies. More recently, she played Moira Rose in the hit series, Schitt's Creek, who was also a mother to two kids. "It's great to play a realized mother because it is one of the most important roles in life," she told Variety in a 2020 interview about playing Moira. As her above statement suggests, Catherine was also a mother in real life. She shared two sons, Mathew and Luke, with her husband of 30 years, Bo Welch.