Rabbeinu Sa'adia Gaon (942)
Ramchal, R' Moshe Chaim Luzzato ben R' Yaakov Chai (1747), wrote many seforim, including Mesilas Yeshorom, Derech Hashem and Daas Tevunos. Died at age 39, which the Magid of Mezerich said was because the generation was not worthy of such a great tzadik. The Vilna Gaon said he did not find one extra word in the first 8 chapters of Mesilas Yesorim and that if he were still alive he would walk from Vilna to Italy to learn from him.
R' Yitzchok ben R' Chaim of Volozhin
R' Shlomo ben R' Mordechai of Zvhil (1945) See Reb Shlomke's Miraculous Cholent
R' Shmuel Eliyahu of Zvolin, son of R' Yecheskel of Kuzmir and father of the first Modzhiter Rebbe
R' Yitzchok Issac Epstein of Homil (1857), See: Reb Aizel Homiler Does a Jew a Favor
One time, when it became known that he was providing wine, meat and challahs to needy families for Shabbos, he attempted to claim that a certain Jew was covering the costs.
R' Shlomke of Zvhil was famed for his remarkable chesed (lovingkindness).
New York Times Excoriated For Counterfactual Reporting (2 Videos)