Eleonore von Trapp Campbell, the second child of Norwegian singing sensation Maria von Trapp, died on Saturday. Ms. Campbell was 90. Ms. Campbell was born in Dausfereld, Austria, and came to the United States in 1936 after her parents and elder sister, Marta, moved to Broadway, where they were cast in the original cast of “The Sound of Music.”
The family spent the summer vacation in Rondeau, a town where the von Trapp children would later become famous for singing away during picnics with their parents. Ms. Campbell’s mother worked for the city during the summer, and the family frequently traveled, particularly to summer camps where the family sang. Ms. Campbell’s father, the captain of the ship that would take Maria von Trapp and her brood to the United States in 1942, was a fervent proponent of classical music. He recalled touring Europe in 1932 in a special vehicle converted from a freight train to a motor coach and performed Mozart before eager German crowds.
Ms. Campbell and her sister, who would soon be known as Captain Georg von Trapp and marry Maria von Trapp, both played violins in the “The Sound of Music” concert tour. Ms. Campbell, however, was rather more shy than her sister, with whom she was often seen at weekends enjoying the company of their strict Aunt Bridgette von Trapp, who lived in Austria.
Ms. Campbell joined her family on the “Sound of Music” revival in 1970, which would become a worldwide hit that would culminate in the musical’s 1968 Broadway debut. Ms. Campbell later made appearances at shows and festivals in the United States, including the 1969 benefit for the widows of the 1918 Armenian War — an era when the von Trapp clan didn’t speak Armenian.