Art curator and collector who has earned a place in art and rock history for being a mentor and benefactor for photographer Robert Mapplethorpe and punk rocker Patti Smith.
He went to Yale University and was a fixture in the upper west side debutante circuit.
He was the subject of the 2007 documentary "Black White + Gray: A Portrait of Sam Wagstaff and Robert Mapplethorpe", which premiered at the Tribeca Film Festival.
His mother was a fashion illustrator for Harper's Bazaar and Robert Mapplethorope, his protege, was also his lifetime companion.
He gave Robert Mapplethorpe $500,000 to buy an expensive manhattan apartment to use as a living and shooting space.