Rav Dovid Zvi Shlomo Biederman, known as Reb Dovid'l (1844-1918), was a leader of the Chassidic community in Jerusalem. Born in Lelov to Rav Eliezer Menachem Mendel of Lelov and Rebbetzin Matil Feiga, he was named after the founder of the Lelov dynasty, Rav Dovid (1745-1813), a direct descendant of King David and student of the Chozeh of Lublin. His mother's grandfather was also the Chozeh of Lublin.

After traveling through Europe in his younger years to visit prominent tzaddikim, Reb Dovid'l became so impressed by Rav Aharon the Second of Karlin that he adopted the Karlin chassidic customs. He succeeded his father in 1883 as the fourth Lelover Rebbe. Though holding the Lelov title, he davened in the emotionally expressive Karliner style. He headed Kollel Warsaw and used its funds to establish the Batei Warsaw neighborhood, now part of Meah Shearim. The Lelov dynasty continues today with descendants leading courts in Jerusalem, Bnei Brak, and New York.

Also commemorated are Miriam Bella, sister of the Rama and wife of the head of Cracow Jewry (1619), and Rav Dov Cohen (1912-2005), author of Seder Hashulchan and a student of the Alter of Slabodka at Chevron Yeshiva. Born in Seattle, Cohen was brought to Israel at age 14. Before 1948 he served as rabbi of several synagogues; afterward he was rabbi of the Israeli Air Force for five years.

Historical events on this date include Christian censorship of Jewish writings ordered by King James I of Aragon in 1263; the 1777 arrival of Rav Menachem Mendel of Vitebsk and Rav Avraham of Kalisk with 300 chassidim, the first major aliya of students of the Baal Shem Tov; a 1919 massacre of Jews in Kiev by Ukrainian forces; and the 1938 cancellation of civil rights for Italian Jews and expulsion of foreign-born Jews by Mussolini.