Rav Efraim Navon Machane Efraim (Nissan 26, 5495 / 1735 - 289th Yahrzeit)
The gaon Rabbi Ephraim Navon Zatzal was born in the city of Constantinople, where he and his friend of the same age, the gaon Yaakov Sasson, studied Torah with their teacher Rabbi Alfandri Zatzal. Rabbi Ephraim continuously elevated himself in the rungs of Torah and the fear of Heaven, studying with extraordinary diligence and perceptiveness. When he reached the age of marriage, he married the daughter of the gaon Rabbi Yehudah Irgaz Zatzal, at which time he and his father-in-law left for Eretz Yisrael and settled in Yerushalayim. Rabbi Ephraim remained isolated for 10 years, studying the entire Talmud with tremendous concentration and in great depth. During that time he also studied the works of the Rambam and the Beit Yosef. Thus Rabbi Ephraim’s name became famous in the Jewish world.
Sent by Rav Roshehien, Rabbi Ephraim left IsEretz Yisrael and returned to Constantinople, where he became the Rav of the city. At the same time, he wrote his famous book Machaneh Ephraim on various Halachos, a book that the Chida described as being incredibly insightful and valuable. In fact his book was acknowledge by the entire Torah world, and even today both Machaneh Ephraim and its commentaries are studied in yeshivot throughout the world.
In reading Machaneh Ephraim, one can clearly see the author’s extensive scholarship and wisdom. It is even said that Rabbi Ephraim could perform wonders, knowing the sacred Names of Hashem and being able to use Kabbalah to save Jews from their hardships and illnesses. Rabbi Ephraim Navon passed away on Nissan 26, 5491, as his soul ascended to the celestial academy. May the memory of the tzaddik be blessed.
https://hevratpinto.org/tzadikim_eng/191_Rabbi_Ephraim_Navon.html
Rav Moshe Teitelbaum Berach Moshe (Nissan 26, 5766 / 2006 - 18th Yahrzeit)
The Beirach Moshe, Rav Moshe Teitelbaum was a giant in Torah and humility. Despite being a prominent leader of Torah Jewry and a renowned talmid chochom, the Beirach Moshe was renowned for his extreme humility and his care and concern for every Yid. As Rosh Yeshiva of Yeshivas Atzei Chaim of Sighet before the Divrei Yoel's passing, Rav Moshe was a father figure to the bochurim, caring for their needs with tender concern. As a newly-married yungerman living in Keretzky, Hungary at the home of his illustrious father-in-law, Rav Henoch Chanoch Meyer, the Beirach Moshe served as Rosh Yeshiva of the Keretzky Yeshiva. Later, when he arrived in New York after the war, he immediately founded his own yeshiva and continued being marbitz Torah. The talmidim of the Sigheter Yeshiva, many of them illustrious bnei Torah, have fond memories of those blissful years.
https://yated.com/a-talmidaes-recollections-the-beirach-moshe-rav-moshe-teitelbaum-of-sa tmar-ztae%C2%9Dl-upon-his-fifth-yahrtzeit/
Rav Levi Yitzchok Greenwald Migdelos Merkochim (Nissan 27, 5740 / 1980 - 44th Yahrzeit)
Rav Levi Yitzchak Greenwald, the Tzelemer Rav (1980). He arrived in America in 1939, just before the onset of WW2, after his Beis Medrash was destroyed on Kristellnacht, and he re-established his Beis Medrash in Williamsburg. He also established one of the first Chasidishe yeshivos in America, Arugas Habosem, named after his father, the Chuster Rav, who was known as the Argas Habosem.
matzav.com
Rav Avigdor Miller (Nissan 27, 5761 / 2001 - 23rd Yahrzeit)
Rav Avigdor Miller. (1908-2001). Born in Baltimore, Rav Avigdor attended public school like all the other Jewish boys from religious homes, and he studied Torah with his grandfather and other local rabbonim. At the age of 14, he left to study at Yeshivas Rabbenu Yitzchak Elchonon, which at the time was the only Jewish high school offering high-level Jewish studies in the U.S. It was there that he met future leaders of US Jewery, such as Rav Nosson Wachtfogel, Rav Yehuda Davis and Rav Mordechai Gifter. They met met secretly in Rav Miller's dormitory room in to hear a shiur in Mesillas Yeshorim by Rav Yaakov Yosef Herman. In 1932, he followed Rav Aizik Sher to Slobodka, where he spent 6 years learning. In 1935 he married his life partner for 64 years, Ethel Lessin. The first rabbinical position which Rav Avigdor accepted was in Chelsea, Massachusetts. In 1945, Rav Miller was offered a job as mashgiach of Chaim Berlin by Rav Hutner, a position he kept for 19 years. He was then invited by the Young Israel of Rugby to be their unofficial rov. The shul, located at East 49 street in the East Flatbush section of Brooklyn, a position which became official in 1946-47. He began writing his first book, Rejoice O Youth, in 1963. In 1964, when Yeshivas Chaim Berlin moved to Far Rockaway, Rav Miller decided to resign and devote himself full time to his congregation and his writing. He finished
