Peter Shaffer, a leading British playwright whose Tony-winning dramas "Equus" and "Amadeus" explored the male psyche through the entwined anguish of dual protagonists, died on Monday in County Cork, Ireland. He was 90.
His agent, Rupert Lord, confirmed the death. "Sir Peter had traveled to Ireland to celebrate his 90th birthday with close friends and relations," Mr. Lord said in an email. Mr. Shaffer turned 90 on May 15. He died in a hospice in Curraheen, a district outside Cork City. Mr. Shaffer (pronounced SHAFF-er) lived in Manhattan for more than 40 years.