He married Rosa Korngut (1869 – 1934) and they had three sons: Solomon (Salomo) Birnbaum (1891–1989), Menachem Birnbaum (1893–1944), and Uriel Birnbaum (1894–1956).
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:Nathan Birnbaum is also the birth name of comedian George Burns.
Nathan Bedford Forrest | Nathan Lane | Nathan Hale | Nathan Milstein | Starboy Nathan | Nathan | Nathan Fillion | Nathan the Wise | Nathan Englander | Dara Birnbaum | Nathan's Famous | Nathan Mayer Rothschild | Nathan East | Nathan Appleton | Lionel Nathan de Rothschild | Nathan Scott | Nathan Phillips Square | Nathan Phillips | Nathan Lawr | Nathan Carter | Nathan Barley | John Nathan-Turner | William Nathan Wrighte Hewett | Nathan Zuckerman | Nathan Stoltzfus | Nathan Rennie | Nathan (prophet) | Nathan Parseghian | Nathan Mumm | Nathan McCullum |
The organizers of this gathering (Benno Straucher, Nathan Birnbaum, Chaim Zhitlowsky, David Pinski, and Jacob Gordin) expressed a sense of urgency to the delegates that Yiddish as a language and as the binding glue of Jews throughout Eastern Europe needed help.