Cause of death: brain cancer
Pierre Vital Georges Bergé (French pronunciation: [pjɛʁ vital ʒɔʁʒ bɛʁʒe]; 14 November 1930 – 8 September 2017) was a French industrialist and patron. He co-founded the fashion label Yves Saint Laurent, and was a longtime business partner (and onetime life partner) of its namesake designer.
Source : Wikipedia