Background
1 November 1911 – 22 February 1992) was the firstborn child and eldest son of Georg and Agatha (née Whitehead) von Trapp. He was born on 1 November 1911. His father was Georg von Trapp and his mother was Agatha (née Whitehead) von Trapp (1891–1922).
He grew up in Zell am See during World War I with his siblings, Agathe von Trapp (1913–2010), Maria Franziska von Trapp (1914-2014), Werner von Trapp (1915–2007), Hedwig von Trapp (1917–1972), and Johanna von Trapp (1919–1994).
Career
He was portrayed as the character "Friedrich". The youngest sister, Martina von Trapp (1921–1951), was born in Klosterneuburg (Austria), whither the Trapp Family had moved from Zell-am-See because their home (a "lake hotel" called "Kitzsteinhorn") had been flooded. In 1922, von Trapp"s mother died of scarlet fever and was buried in Klosterneuburg when Rupert was almost 11 years old.
In 1925, the family moved to Salzburg-Aigen.
Georg and Maria Augusta had three children together: Rosmarie (1928 or 1929), Eleonore (1931), and Johannes (1939). Rupert studied medicine and became an Austrian citizen.
Later, in the family chorus, he sang bass. In 1938 he had a possibility of a job in Vienna, but refused because the job was being taken away from a Jewish physician by the Nazis.
The family left Austria in summer of this year and went to America.
Rupert and Werner eventually served in Italy with the 10th Mountain Division.
Membership
He was a member of the Trapp Family Singers, whose lives were the inspiration for the play and film The Sound of Music.