On the Mississippi River during the time of Samuel Clemens, A rope or rod with fathom markings was used to gauge the depth of the river. A depth of less than two fathoms was considered risky for boats to navigate across. Who ever was doing the depth measure would call out the markings by terms such as twain for two, trey for three, quad for four........ and so forth. Samuel Clemens worked on a river boat before he became a writer. when he decide to write under a pen name, he choose Mark Twain (safe passage).
Mark Twain (a nautical term)
"Twain" is an archaic term that means "two" or "between two." It's commonly known from the phrase "Mark Twain," which was used as a nautical term for water depth measurement. "Mark Twain" means the water is at a depth of two fathoms or 12 feet, indicating safe passage for boats.
Mark Twain's real name was Samuel Langhorne Clemens. His pen name, "Mark Twain," was derived from a riverboat term meaning "two fathoms deep." Another nickname he had was "The Father of American Literature."
Mark Twain's nickname was actually his pen name; his real name was Samuel Clemens. He chose the name "Mark Twain" from a riverboat term meaning the water is two fathoms deep, indicating it was safe to navigate.
Either Ken Burns, Mark Twain, or George Orwell.
Mark Twain
'Mark Twain' is a pen-name used by writer Samuel Langhorne Clemens. He worked on the Mississippi River as a steamboat pilot and named himself after the call used when sounding the depth of the river "by the mark twain": meaning that the river was two fathoms deep (6ft) which was a safe depth for the boat to travel.
beam
Pseudonym is just a fancy term for "pen name".Mark Twain is the pen name. Mark Twain's real name is Samuel L. Clemens.
Samuel Clemens got his pen name Mark Twain from boat terminology picked up when he worked on a steamboat. The term "mark twain" refers to a river that is two fathoms deep.
ABAFT
its Mark Twain and Charles Dudley