By the time that she was 5, Tracy had a film credit to her name. The daughter of singer Ricky Nelson and Kris Harmon, she appeared as one of Henry Fonda's daughters in the movie 'Yours, Mine and Ours (1968)'. In 1982, she became the popular valley girl Jennifer DeNuccio on the Television series "Square Pegs" which ran from 1982-83. This popular show would make Tracy's name well known. She would make a few small appearances in movies, but she would pursue Television and return in the 1984 series "Glitter". Two years later, she was in the Nick Nolte movie 'Down and Out in Beverly Hills (1986)'. In 1987, Tracy was very sick and was diagnosed with Hodgkin's disease. In 1989, she returned to Television as Sister Stephanie Oscalsky, nosey detective, in "Father Dowling Mysteries". Since that time, she has appeared in a handful of Television Movies and had a reoccurring role on "Melrose Place" and "A League of Their Own (1993)".



Paternal grandparents are Ozzie Nelson and Harriet Hilliard. Maternal grandparents are football great (and later sport broadcaster) Tom Harmon, and the 1940s "B"-movie actress Elyse Knox. She is the niece of Kelly Harmon, Mark Harmon and David Nelson. She was diagnosed with Hodgkin's Disease one month after she wed William R. Moses. Ex-daughter-in-law of Marian McCargo. Ex-sister-in-law of Rick Moses and Harry Moses. Her maternal grandparents are the football great (and later sport broadcaster) Tom Harmon, and the 1940s "B"-movie actress Elyse Knox. Shared the screen with Tom Bosley before "Father Dowling Mysteries" (1989) - they were both in the Henry Fonda/Lucille Ball movie Yours, Mine and Ours (1968). Made guest appearances on "Melrose Place" (1992) as Alison Parker's (Courtney Thorne-Smith) sister Meredith. Her ex-husband, William R. Moses, also made appearances on the show as Alison's boyfriend Keith Gray. Was the subject of an instrumental introduction piece called "Tracy's Song," on the album "After the Rain," written and recorded by her twin brothers, Matthew and Gunnar, with their band, Nelson.