No, I have never read that he was.
Mark Twain is nom de plume (a name used by an author instead of his rea name). It has no middle part. The author who used the name Mark Twain was Samuel Langhorne Clemens.
The v in Native American is part of the word "Native". It doesn't stand for anything.
they are not
no
According to the U.S. Census Bureau, about 2 of the population in the United States identifies as part Native American.
no
All of them.
yes
it's not.You could be Indian or part Indian but not native American.
He claims that he is both Native American and Italian in heritage.
Leprechauns are part of Irish mythology and have never featured in any native American culture. There is therefore no word for leprechaun in any native American language.
food