Maria Franziska von Trapp

Maria Agatha Franziska Gobertina 'Mitzi' von Trapp (28 September 1914 – 18 February 2014) was the second-oldest daughter of Georg von Trapp and his first wife, Agathe Whitehead von Trapp. The Trapp family rehearsing before a concert, near Boston, 27 September 1941.

They emigrated to the United States in 1938, settled in Vermont in 1942, and performed throughout the country. Baron von Trapp died in 1947. Maria Franziska became a naturalized U.S. citizen in 1948 and lived at her family's lodge in Stowe, Vermont. The family continued to tour until their last concert on 26 January 1956, at which time Maria Franziska and her stepmother became lay missionaries in Papua New Guinea where Maria Franziska adopted a son, Kikuli Mwanukuzi.

From 22 July 2008 to 27 July 2008, she visited her childhood home in Salzburg/Aigen and her birthplace in Zell am See. Accompanying her were her half-brother Johannes and her sister-in-law Erika (Werner's widow). During their visit, the group met with Ernst Florian Winter, the husband of her sister Johanna (1919–1994).

She was the last survivor of the seven original von Trapp children. Of the three half-siblings from her father's second marriage, whose names are Rosmarie von Trapp (1929–2022), Eleonore von Trapp (1931–2021), and Johannes von Trapp (born 1939), Johannes von Trapp is still alive. None of those three were featured in The Sound of Music.