Braun wrote a history of the women worker 's movement of Germany in which she gave Guillaume - Schack credit for developing the movement .
Guillaume - Schack and Lily Braun were the only two aristocratic women to join the SDP .
Lily Braun wrote a history of the women worker 's movement of Germany in which she gave Guillaume - Schack credit for developing the movement .
Guillaume - Schack and Lily Braun were the only two aristocratic women to join the SDP .