• Maria did not marry Georg von Trapp because she was in love with him. As she said in her autobiography Maria, she fell in love with the children at first sight, not their father. When he asked her to marry him, she was not sure if she should abandon her religious calling but was advised by the nuns to do God’s will and marry Georg. “I really and truly was not in love. I liked him but didn’t love him. However, I loved the children, so in a way I really married the children.  … [B]y and by I learned to love him more than I have ever loved before or after.”
• There were 10, not 7 von Trapp children.
• Georg, far from being the detached, cold-blooded patriarch of the family who disapproved of music, as portrayed in the first half of The Sound of Music, was actually a gentle, warmhearted parent who enjoyed musical activities with his family. While this change in his character might have made for a better story in emphasizing Maria’s healing effect on the von Trapps, it distressed his family greatly.
• The family did not secretly escape over the Alps to freedom in Switzerland, carrying their suitcases and musical instruments. As daughter Maria said in a 2003 interview printed in Opera News, “We did tell people that we were going to America to sing. And we did not climb over mountains with all our heavy suitcases and instruments. We left by train, pretending nothing.”