Twain has no living direct descendants
Twain wed Olivia Langdon, an abolitionist who was born and raised in Elmira, New York, in 1870. Olivia's younger brother, who had met Clemens while traveling to Europe and the Holy Land on the steamer Quaker City in 1867, made the introduction. In his best-selling travelogue "The Innocents Abroad," published in 1869, Clemens wrote about this outing. The Clements had four children, two of whom died in their 20s and one of whom, a son, died when he was just a baby. While her famous husband passed away on April 21, 1910, at his home in Redding, Connecticut, at the age of 74, Olivia Clemens passed away in 1904 at the age of 58. Her health had been declining for several months. Their last child, Clara, passed away in 1962. Nina Gabrilowitsch, Clara Clemens' lone child, died in 1966. There are no living direct descendants of Samuel Clemens since Gabrilowitsch was childless.
Aditional, probably one of the most interesting facts about Mark Twain's life is the fact that he accurately predicted the day he would pass away. I arrived in 1835 with Halley's Comet, he claimed in a 1909 letter. I anticipate leaving with it since it will return the next year. If I don't go out with Halley's Comet, it will be the worst disappointment of my life. There is no question that the Almighty has said: "Now look at these two irrational freaks; they came in together, they must go out together." Oh, I am excited about it. The famous novelist passed away on April 21, 1910, just as the comet was visible in the sky, much to everyone's great surprise—except his own.