An émigré physician: Dr David (Didier) Roth, homoeopath, art collector, and inventor of calculating machines.
Brody
J
J
D001154:Art / Q000266:history; D049672:History, 19th Century; D006705:Homeopathy / Q000266:history*; D006814:Hungary; D008433:Mathematics / Q000266:history; D010820:Physicians / Q000266:history*