Pen Name (Mark Twain)

From Mark Twain in the German Language Press

Samuel L. Clemens started using the pen name "Mark Twain" in 1863 (see Rasmussen et al. 2:774). Its first known appearance was in a letter published in the Virginia City Territorial Enterprise on 3 Feb. 1863 (see Rasmussen et al. 2:774).

The names' nautical origin (literally meaning "two marks" or 12 feet in measuring the depth of a river) were repeatedly explained to the general public in newspaper reports - sometimes in the form of a short article merely professing to present an interesting tidbit of information, sometimes in the form of longer musings and anecdotes about Clemens' life and his time as a Mississippi pilot.

"Mark Twain" was not the only pen name Clemens used, but it was the one he used most consistently in his publications (and sometimes in his private life) and which most shaped the perception of his public persona. Newspaper articles frequently mention both names (S. L. Clemens and Mark Twain) for clarity, but often use only Mark Twain to refer to the Clemens.