Marcia Van Dyke was born March 26, 1922 to Evelyn and Edward Van Dyke. Raised in Menlo Park, California, Marcia became an accomplished violinist, in fact, the first female violinist in the San Francisco Symphony. Van Dyke toured the US with the orchestra, and was on the cover of LIFE Magazine on Jan. 19, 1948. She went on to play with the New York Philharmonic and the New York Opera.
Her talent as a violinist was showcased when she played Louise, Van Johnson's friend, in "In The Good Old Summertime". Besides films, she also appeared on Broadway. Later in life she was active on many different music and chamber boards.
Upon retiring from acting, Van Dyke continued to play violin professionally until she retired in the 1990s.