Samuel Langhorne Clemens first used this pen name in 1863 while with the Territorial Enterprise in Virginia City, Nev.
... New Perspectives On The West - Biography of Samuel Langhorne 
Clemens... [DOC] [TLE] Mark Twain - McGill School Of Computer Science [PAR] Samuel Langhorne Clemens ( November 30, 1835  April 21, 1910), better ... 
Plains and the Rocky Mountains to the silver-mining town of Virginia City, 
Nevada.