- Relation to Gustav Mahler (1860-1911): A son of a sister (nephew)
- Born: 18-02-1900 Boston, America.
- Father: Eduard Rose (1859-1943) Previous generation.
- Mother: Emma Marie Eleanor Rose-Mahler (1875-1933) Previous generation.
- Married: 1959 to Ilse Dzeia.
- Died: 1988 Washington DC, America.
In 1939 exile in America.
Actor, worked for the Voice of America.
Supplement 2 of the Gustav Mahler-Alfred Rosé Collection - University of Western Toronto, [items numbered 766-775] was in the possession of Ernest Rosé of Washington, son of Emma Mahler and Eduard Rosé, and consists of four letters by Mahler (one written in collaboration with his sister Justine) to family members; six letters from Justine to Emma; ten letters from Bruno Walter to Mahler, Justine or Emma; four cabinet card photographs of Walter; and a draft of a letter by Arnold Rosé (in Mahler's hand) withdrawing the offer of a position with the (Rosé Quartet) to the cellist Rudolf Krasselt, citing an unpleasant situation between Krasselt's brother (Concertmaster in Weimar) and his behaviour toward Arnold's brother Eduard Rosé. See Gustav Mahler-Alfred Rosé Collection - University of Western Toronto.