León Chaim Lazer Weinstein (May 13, 1910 – December 28, 2011) was the oldest surviving resistance fighter of the 1943 Warsaw Ghetto Uprising.

Leon Chaim Lazer Weinstein was born on May 13, 1910, part of a Jewish family in the small town of Radzymin, 20 miles outside of Warsaw, Poland.

[4] As WWII broke out, Weinstein rejoined the Army in early September 1939 to fight with the Polish cavalry during German invasion of Poland.

[5] He took an active part in the Jewish Combat Organization (Polish: Żydowska Organizacja Bojowa, ŻOB) under the leadership of Mordechai Anielewicz and Yitzhak Zuckerman.

Thousands of Jews from Radzymin were rounded up and sent via rail transport to Treblinka, a Nazi concentration camp in the northeast of Poland.

[8] He crawled through the sewers for three days and managed to escape the Ghetto with six others who scattered in the non-Jewish part of the city.

[9] Weinstein was able to stay at a friend's house for the remainder of the war and worked for the Polish Underground Army.

At war's end, for six months, Leon traveled across Poland on his bicycle, searching one convent orphanage after another.