Rav Dovid Menachem Munish Babad, the Chavatzeles Hasharon of Tarnopol (1865-1937). Born to Rav Yehoshua Heshel of Podvolotchisk, he married Leah the daughter of Rav Yoel Moshe Segal Landau of Yavrov (near Lvov). He and his Rebbetzen had 5 daughters. Rav Dovid Munish was a staunch chasid of Belz. In 1892, he succeeded his father as Rav in Strisov, when his father became Rav in Podvolotchisk. Two years later, he succeeded his father-in-law in Yavrov and served there for 17 years. In 1909, after the petira of Rav Shimon Badad, son of the Minchas Chinuch, Rav Shimon’s son – Yehoshua Heshel – became Rav of Tarnapol, but was too frail to handle the responsibilities.

Rav Avraham Hakohen Rappaport Shrentzel, Rosh Yeshivas Chevron (1584-1651). As a youth, he learned under Rav Meshulam Feivush, the Rav of Cracow. He married the daughter of Reb Mordechai Shrentzel of Lemberg and continued his studies under Rav Yehoshua Falk in that city. He founded a yeshiva and taught there for 42 years. He authored Shailos Uteshuvas Eissan HaEzrachi.
Rav Yissachar Dov Ber, the “Saba Kadisha” of Radushitcz (Radoszyce; Radoshitz), (1765-1843). A disciple of Rav Yaakov Yitzchak, the Chozeh of Lublin, and Rav Yaakov Yitzchak of P’shischa.
Rav Moshe Mordechai Shteger (1843), author of Meged Shamayim, a peyrush on Pri Megadim on Yoreh Deah. The sefer was published in 1889.

Rav Tzvi Hirsh Broide, Rosh Yeshivas Kelm. His wife was Rebbetzin Nechamah Leba Broide, the daughter of the Alter of Kelm. He became very close to his talmid Yechezkel Levenstein, the future mashgiach of Mir and Ponevezh.

Rav Mordechai Menachem Kalish, of Vorke (1868). A talmid of the Kotzker Rebbe. He passed away at a young age.
Rav Shalom Eliezer Halberstam of Ratzfort, son of the Divrei Chaim (1944)

Birth, in 1565 BCE, and Yahrtzeit, in 1446 BCE (or 1436 BCE) of Yehuda, son of Yaakov Avinu (Midrash Tadshe).
Rav Yitzchak of Posen, the rebbe of the Magen Avraham and the author of Sheilos Uteshuvos Be’er Yitzchak (1685). A talmid of Rav Yonah Teumim (the Kikayon D’Yonah), Rav Yitzchak served as Rav in Loitsk, then succeeded Rav Moshe (the Chelkas Mechokek) as Rav of Vilna, before moving to Posen., there replacing Rav Sheftel Horowitz, the son of mthe Shelah Hakodesh.
Rav Dovid Dov Meisels of Uhel, the Binyon Dovid (1944)
Today in History – 15 Sivan

Rav Chaim of Volozhin (1749-1821). The most prominent student of the Vilna Gaon, Rav Chaim established the Volozhin yeshiva in 1803, which was to become the classic model of Lithuanian yeshiva.
His most famous work was Nefesh Hachaim, in which he emphasizes the power of Torah study and fulfillment of mitzvos to bring a Jew close to G-d. He also authored Ruach Chaim, a commentary on Pirke Avos, and Nishmas Chaim, a collection of responsa.
Rav Moshe Horowitz, Bostoner Rebbe in New York

Rav Ephraim Hakohen Katz of Vilna, the Shaar Ephraim (1616-1678). Father-in-law of the Chacham Tzvi. In 1678, he accepted the position of Chief Rav of Yerushalayim. Originally from Vilna, he had been living in Budapest for the last few years. At this time, his oldest son died suddenly at the age of only 30. Then, while sitting shiva, his only other son, Rav Yehuda Leib, fell ill and lay in critical condition. Rav Ephraim davened that Heaven take him rather than his son. Immediately, he fell ill, and his son’s health improved. He instructed his son to publish his sefer, then he passed away.
Rav Avraham Yitzchaki (1729). Author of Zerah Avraham.

Rav Shmuel Rosenberg of Unsdorf, author of Be’er Shmuel (1919). Son of Rav Yisrael Yona Zvi, Rav of Tisa-Ferred. At the age of 16, he attended the yeshiva of the Ksav Sofer. He became a Rav in Tchabba and later in Unsdorf, the latter for 37 years.
Rav Mordechai Brisk of Chanad, Hungary, Av Beis Din Tashnad, author of She’eilos U’Teshuvos Maharam Brisk (1944)
Rav Elimelech Kahane, Rav of Ungvar, Hungary (1944)

Rav Eliezer Rokeach of Amsterdam, the Maaseh Rokeach
Rav Ezra Harari Raful, mekubal of the Aleppo community
Rav Moshe of Rozvadov, son of Rav Eliezer of Dzikov (1894)

Rav Moshe Rivkes, author of Beer Hagolah on Shulchan Aruch (1672 or 1684). He was one of four great tzadikim of Vilna who lived at the tragic time of the massacres at the hands of the Cossacks in 1655, along with Rav Ephraim (the Shaar Ephraim), Rav Shabbsai Cohen (the Shach), and Rav Shmuel Koidenaver. Approximately 25,000 Jews were killed in and around Vilna.