Melissa Sue Anderson, born on September 26, 1962, in Berkeley, California, is an American-Canadian actress best known for her role as Mary Ingalls in the NBC drama series "Little House on the Prairie" (1974-1983). She began her career as a child actress, appearing in commercials and guest roles on TV shows before landing the iconic role of Mary Ingalls at the age of 11.

Her performance earned her a nomination for the Primetime Emmy Award for Outstanding Lead Actress in a Drama Series.

After "Little House on the Prairie," Melissa Sue Anderson continued to work in television and film, appearing in movies like "Happy Birthday to Me" (1981) and "Midnight Offerings" (1981).

She also guest-starred in TV shows such as "The Love Boat," "The Equalizer," and "Murder, She Wrote." In 2007, she became a naturalized citizen of Canada and has since focused on her family and various charitable activities.

Melissa Sue Anderson is married to Michael Sloan, and they have two children together. She published an autobiography titled "The Way I See It: A Look Back at My Life on Little House" in 2010, offering insights into her experiences on the beloved series.