Stanisław Estreicher

Stanisław Ambroży Estreicher (26 November 1869 – 28 December 1939) was a Polish historian of Law and bibliographer; professor of the Jagiellonian University in 1906. Following the 1939 invasion of Poland, he was briefly offered to form a puppet quasi-government by Nazi Germany. He paid with his life for his refusal to do it. but he refused. Stanisław Estreicher died on 28 December 1939 of uremia caused by the difficult conditions in the camp. His family was not informed until 13 January 1940, and his funeral was not held until 28 July 1940.

His wife, Helena née Longchamps, died in March 1940. His son, Karol Jr., would later complete the Bibliografia Polska.