Joan Aust was born 31 May 1878 in Berlin, Germany and died 12 December 1939 Paris, France of Head and neck cancer.
Children
| Name | Birth | Death | Joined with |
| Francine Thomas (1918-1996) | 1 August 1918 Paris, France | 23 August 1996 New York City, New York, United States | Alexander Barber (1910-1990) |
Siblings