Never heard of "Stephan", but if you mean the popular author, Stephen King, he is very much alive at 65. (3-16-13)
Stephan Bibrowski died in 1932.
Stephan R. Epstein died in 2007.
Stephan Endlicher died on 1849-03-28.
Heinrich von Stephan died on April 8, 1897.
Stephan Kekulé von Stradonitz died in 1933.
Stephan Rinser died in 1994.
Stephan Bodecker died in 1459.
Stephan Körner died in 2000.
Stephan Bibrowski died in 1932.
Martin Stephan died in 1846.
Stephan Wiest died in 1797.
Stephan Bassily died in 1990.
Stephan Waser died in 1992.
Stephan Bergler died in 1738.
Stephan Krehl died in 1924.
Stephan Agricola died in 1547.
Stephan Miller died in 2008.