Led Zeppelin was origionally started by Jimmy Page as a supergroup and continuation of the Yardbirds. Many rumors exist about the name. Some say that other musicians said the band would take off like a lead balloon, or the music was going to be heavy and light (who knows). The members were Robert Plant (vocals/harmonica), Jimmy Page (guitar etc), John Paul Jones (base ect) and John Bonham (drums/other percussion). Each member is considered to be one of the best in their feild. The band was formed in 1969 and disbanded after Bonham's death in 1979.
Led Zeppelin was and is the best band ever. Some of their notable albums include: Led Zeppelin I, Led Zeppelin II, Led Zeppelin III, the contraversial Led Zeppelin IV, Coda, Physical Graffiti, Houses of the Holy and This Song Remains the Same. Their best known song is Stairway to Heaven (I havn't been able to find any hidden satanic meanings)