About Maria von Trapp
Maria Augusta von Trapp DHS, often styled as "Baroness", was the stepmother and matriarch of the Trapp Family. She wrote the memoir The Story of the Trapp Family Singers, which was published in 1949 and was the inspiration for the 1956 West German film The Trapp Family, which in turn inspired the 1959 Broadway musical The Sound of Music and its 1965 film version.
Biography source:
Wikipedia
