Rosmarie Erentrudis von Trapp (born 8 February 1929 in Salzburg, Austria)
Rosmarie von Trapp was born on 8 February 1929 in Salzburg, as the first child of Georg Ludwig von Trapp and his second wife Maria Augusta Kutschera. Her siblings are Eleonore von Trapp (1931) and Johannes von Trapp (1939), her halfsiblings: Rupert von Trapp (1911-1992), Agathe von Trapp (1913), Maria Franziska von Trapp (1914), Werner von Trapp (1915-2007) Hedwig von Trapp (1917-1972), Johanna von Trapp (1919-1994) and Martina von Trapp (1921-1951). Rosmarie sang in the Family chorus from 1943 to 1947. When her father died, she was eighteen years old. She never married and has no children. In 1947 she started mission work in Papua-New Guinea with her half sister, Maria Franziska, and her brother, Johannes.