Barukh Dayan ha-Emet

I'm slow in my newsgathering, so I only saw this obituary today, Erev Yom Kippur:Rabbi Ephraim Oshry Dies at 89

Rav Oshry was the Rav of Kovno (where my maternal grandmother a'h is from) when the Evil Ones made it into the Kovno Ghetto. He was faced with the task of answering the most horrific shylas (questions of Jewish law) that have been imagined since the destruction of the Temples.

His responsa, Shaylot v'Teshuvot Me-Maamakim, have been partially translated into English in the book "Respnosa from the Holocaust" - a book that I read every Yom Ha-Shoah and Tisha B'av to get myself into the right mindset.

Rav Oshry died on September 28 - Rosh Hashanah - as befits such a great tzaddik.