The fourth Rebbe of Chabad, Rabbi Shmuel Schneerson (1834-1882) was born on the 2nd of Iyar (like this Wednesday).
Although Rabbi Shmuel was the youngest of the seven sons of the third Rebbe of Chabad (the Tzemach Tzedek), he was chosen to be the next Rebbe after his father's death.
Rabbi Shmuel, in addition to guiding his Hasidim, made extensive trips around Europe, meeting with government and business leaders to pressure Tsarist Russia to stop instigating pogroms against Russian Jewry.
His most famous saying, which became an entire system of service to God, was: "The world says if you can't break through and go under an obstacle, then you must go over it. I say straight up, go over it!".