According to The New York Times:
Tuli Kupferberg, the poet, singer and professional bohemian who went from being a noted Beat to becoming, in his words, “the world’s oldest rock star” when he helped found the Fugs, the bawdy and politically pugnacious folk-rock group, died on Monday in Manhattan. He was 86 and had been a longtime resident of Greenwich Village.
He had been in weak health after suffering two strokes last year, said Ed Sanders, his friend and fellow Fug.
• The Fugs: http://www.thefugs.com