Who was the husband of the woman who had a biography written by Erika Rosenberg?
Erika Rosenberg Erika Rosenberg (born 24 June 1951 in Buenos Aires, Argentina) is an author, interpreter and journalist. She wrote a biography of Emilie Schindler.
Milly Witkop Milly Witkop(-Rocker) (March 3, 1877November 23, 1955) was a Ukrainian-born Jewish anarcho-syndicalist, feminist writer and activist. She was the common-law wife of the prominent anarcho-syndicalist leader Rudolf Rocker. The couple's son, Fermin Rocker, was an artist.