Lidia Zamenhof Lidia Zamenhof Lidia Zamenhof (; 29 January 1904–1942) was a Polish writer, publisher, translator and the youngest daughter of L. L. Zamenhof, the creator of Esperanto. She was born on 29 January 1904 in Warsaw, then in partitioned Poland. She was an active promoter of Esperanto as well as of Homaranismo, a form of religious humanism first defined by her father. Around 1925 she became a member of the Bahá'í Faith. In late 1937 she went to the United States to teach that religion as well as Esperanto. In December 1938 she returned to Poland, where she continued to teach
Ludwik Birkenmajer of scholars. He was married Zofia (Sophie), the daughter of Franciszek Karliński, the professor of astronomy in the Jagiellonian University, and inherited his library embracing mostly the books on mathematics and physics. They had three sons: Aleksander Ludwik (historian of culture and exact sciences, and bibliologist), Józef (poet, interpreter and literature historian), and Wincenty (Polish philologist, teacher and renown Tatra Mountains-climber). His grandson is Krzysztof Birkenmajer (professor of geology, member of the Polish Academy of Sciences). In 2011 the Institute for the History of Science of the Polish Academy of Sciences received the name of father and son: Ludwik &