. . . "It comprises siblings Sofia, Melanie, Amanda and Justin von Trapp, Xinhua reported.Their great-grandfather was Captain von Trapp, the man who served as the inspiration behind the stern naval officer who found love with the help of a singing nun in the 1959 Broadway musical and the 1965 film adaptation.The group???s China tour starts July 26 in Beijing, followed by another eight cities, including S" .