Cause of death: overdose
Brian Samuel Epstein (; 19 September 1934 – 27 August 1967) was an English music entrepreneur who managed the Beatles from 1961 until his death in 1967.
Epstein was born into a family of successful retailers in Liverpool, who put him in charge of their music shop, where he displayed a gift for talent-spotting. He first met the Beatles in 1961 at a lunchtime concert at Liverpool's Cavern Club. Although he had no experience of artist management, Epstein put them under contract and insisted that they abandon their scruffy image in favour of a new clean-cut style. He also attempted to get the Beatles a recording contract, eventually securing a deal with EMI's Parlophone label.
Within months, the Beatles were international stars. Some of Epstein's other young discoveries had also prospered under his management. They included Gerry and the Pacemakers, Billy J. Kramer and the Dakotas, Tommy Quickly, Cilla Black and The Big Three. In 1967, he died of a combined alcohol and barbiturate overdose, ruled as accidental, at the age of 32.
Source : Wikipedia