(CNN)One of Molly Shannon's most famous "Saturday Night Live" characters was awkward, clumsy, Catholic school student Mary Katherine Gallagher.In an interview with Los Angeles Times, Shannon explained how the character came to be after a tragic car accident resulted in the death of her mother, sister and cousin when the actress was 4 years old."I was very heartbroken and very sad and just trying to hold it all together as a kid," she said. "There's no way that you could feel that type of deep pain about your mother and your sister being dead, so you just hold it all in, and it comes up later in life."The accident critically injured Shannon's father, who was driving under the influence.In character as Mary Katherine Gallagher Shannon would.
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