Agathe Johanna Erwina Gobertina von Trapp was the eldest daughter of Georg von Trapp and his first wife, Agathe Whitehead von Trapp. She was also a member of the Trapp Family Singers, whose lives were the inspiration for the 1959 musical play and 1965 film The Sound of Music. She was portrayed as the character "Liesl".

Georg Ludwig Ritter von Trapp was an officer in the Austro-Hungarian Navy who became the patriarch of the Trapp Family Singers.