Rosmarie Trapp was Captain Georg’s eldest child with his second wife, Maria Augusta. Trapp was reared among her seven elder half-siblings and two younger siblings.
Trapp’s brother Johannes von Trapp, the only remaining member of the von Trapp Family Singers, and his wife Lynne and many nieces, nephews, and family in Vermont and Europe survive her.
As tensions escalated before World War II, the von Trapp family fled their home in Austria to avoid the Nazis, and they finally found up in the United States.
Their narrative inspired the 1959 Broadway musical The Sound of Music, which eventually transformed into a 1965 film starring Julie Andrews as Maria.
After arriving in the United States, the von Trapps lived in Lower Merion, Pennsylvania, for three years until moving to Stowe, Vermont, in 1942.