Former hostage journalist John P. McCarthy is 61 years old (born November 27, 1956).
Computer scientist John McCarthy was 84 years old when he died on October 24, 2011 (birthdate: September 4, 1927).
Australian rules footballer John S. McCarthy was 22 years old when he died in a fall in Las Vegas, NV on September 9, 2012 (born November 19, 1989).
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