Stephen Harper age is 55.
Stephen Boyd died on June 2, 1977 at the age of 45.
The Bible is silent in regards the age of Stephen when he was stoned.
Stephen Hawking was born in 1942; as of this writing (2014) he is 72.
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Old age
Lawrence Stephen died on March 22, 2006 at the age of 66.
Stephen Crane started writing when he was 8
Stephen Barnett died on October 13, 2009 at the age of 73.
Stephen A. Douglas died on June 3, 1861 at the age of 48.
Stephen Spender died on July 16, 1995 at the age of 86.
Stephen Timoshenko died on May 29, 1972 at the age of 93.