Rav Aryeh Levin (March 22, 1885 - March 28, 1969), known as Reb Aryeh, was born in Russia. In his youth, he studied in the yeshivot of Slutzk, Halusk, and Volozhin. At the age of 20 he left for Eretz Israel, where he continued to study in the yeshivot of Jerusalem and became familiar with the great men and sages of the city. Eventually Reb Aryeh himself became famous in Jerusalem, and the administrators of the Etz Chaim yeshiva named him as the Mashgiach of their Talmud Torah.
The yeshiva students loved Reb Aryeh. He never yelled at a child, but rather approached him and spoke to his heart in order for the student to become diligent in his studies. He lovingly would caress a student and ask that he study Torah as a favor to him. Thus these children, who did not want to cause their beloved Rav any heartache, studied with diligence in order for Reb Aryeh to be happy with them. With this same loving approach, Reb Aryeh touched and inspired thousands.
You may be interested in this picture of Rav Aryeh Levin:
Rav Aryeh Levin's biography is available from Feldheim.