Malfurion Stormrage was the first night elf druid, and initiated the mainstream use of druidism among the night elven people ten millennia ago under tutelage of the demigod Cenarius. Through Malfurion's guidance, the kaldorei managed to successfully halt the Burning Legion's first invasion of Azeroth during the War of the Ancients. In its aftermath, he became the greatest of the world's archdruids. Malfurion Stormrage is the twin brother of Illidan Stormrage, as well as the loving and beloved husband of the high priestess of Elune, Tyrande Whisperwind. Together, the two have represented the highest leadership of the night elves ever since the fall of Queen Azshara and her Highborne caste.
Source: WoWWiki, "Malfurion Stormrage", available under the CC-BY-SA License.