Ehrmann was born on 6 March 1886 in
Strakonice in southern
Bohemia, then part of
Austria-Hungary, as a son of local haberdashery shop owner. He studied in Plzeň and Vienna and set up an architectural practice in
Prague. His notable projects included works carried out for the Prague Jewish community: the synagogues in Prague Smíchov and Karlín, the gate house, columbarium and prayer hall at the New Jewish Cemetery and an apartment building in Prague's New Town worked on with
František Zelenka. Ehrmann’s best-known work is the
Cubist tombstone for
Franz Kafka's family grave at the New Jewish Cemetery (1924). In 1940 Ehrmann and his wife immigrated to the United States and settled in
Chicago where he died on 11 April 1951. ==References==