Aggrieved artists include John LeKay, a Briton who says he first thought of nailing a lamb's carcass to wood like a cross in 1987, only to see it reproduced by Hirst. Lekay previously claimed in 2007 that he had been producing jewel-encrusted skulls since 1993, before Hirst did so. Lori Precious, an American, says she first arranged butterfly wings into patterns to suggest stained-glass windows in 1994, years before Hirst.
Damien Hirst faces eight new claims of plagiarism | Art and design | The Guardian
http://www.guardian.co.uk/artanddesign/2010/sep/02/damien-hirst-plagiarism-claims