{geni:about_me} Jeanette (Knopfelmacher) Zerkowitz was born Jewish, but styled herself a Christian, though it is not clear if she ever formally converted. She was probably agnostic, but incongruously referred to herself as a "marrano." (Marrano (literally, "Pig") is a derrogatory adjective used by Catholic Spaniards to describe Jews who converted to avoid persecution, but who secretly tried to preserve their Jewish identity and religious practices.)

Neue Freie Presse -- 13 October 1905 (death notice)

JEANETTE ZERKOWITZ, age 84, died 12 October 1905... survived by children Sidonie Grunwald-Zerkowitz, Julius Zerkowitz, and Dr. Johann Zerkowitz