R. Aharon (Arche) Levin of Liozna (c. 5570-5661) was a prominent chossid of the Tzemach Tzedek, and later of the Rebbes of Kopust. He was a Rosh Yeshivah in Dubravna and Vitebsk, before serving as the Rov of Liozna for many years. An exceedingly humble elder Chassid, he relayed traditions going back to the Alter Rebbe.
R. Aharon once attended a chasunah in Vitebsk, where his father R. Baruch lived. The hall was a large room, filled with people, and R. Aharon was seated at the head of the table. On the opposite wall there was a mirror, and when R. Aharon looked at the mirror he suddenly asked, “Who is that distinguished looking Jew sitting at the end of the table?” His entire life he had never looked in a mirror and didn’t know what he looked like.
(ניצוצי אור – וויינגארטן)