Jean Clemens
Jane Lampton" Jean" Clemens( July 26, 1880 – December 24, 1909) was the youngest of three daughters born to Samuel Langhorne Clemens( better known by his pen name Mark Twain) and his wife Olivia Langdon Clemens.
She drowned in a bathtub at her father's home on Christmas Eve 1909 after an apparent seizure.
Eusebius (consul 359)
Flavius Eusebius( died after AD 371) was a Roman Senator, who was the brother- in- law of the emperor Constantius II.
Robert Vadra
Robert Vadra is an Indian businessman, entrepreneur and the husband of Priyanka Gandhi.
He is the son -in- law of Sonia Gandhi and Rajiv Gandhi, and the brother- in- law of Rahul Gandhi.
Susy Clemens
Olivia Susan" Susy" Clemens( March 19, 1872 – August 18, 1896), was the second child and oldest daughter of Samuel Clemens, who wrote under the pen name Mark Twain, and his wife Olivia Langdon Clemens.
She inspired some of her father's works, at 13 wrote her own biography of him, which he later published in his autobiography, and acted as a literary critic.
Her father was heartbroken when she died of spinal meningitis at age twenty- four.
Her biography of her father was published in 1988 in its entirety as" Papa: An Intimate Biography of Mark Twain", a volume which also included a biography of Susy Clemens and her correspondence with her father.
Robert W. Levering
Robert Woodrow Levering( October 3, 1914 – August 11, 1989) was a U.S. Representative from Ohio, son-in- law of Usher L. Burdick and brother- in- law of Quentin N. Burdick.
Wyndham Goold
Wyndham Goold( 1812-1854) was a Member of Parliament( MP) for County Limerick from 1850 to 1854.
Goold was educated at Westminster School and Trinity College, Dublin.
He was the son in law of Frederick Falkiner Goold, Archdeacon of Raphoe and brother in law of Bishop Hamilton Verschoyle
Mark Twain
Samuel Langhorne Clemens (November 30, 1835 – April 21, 1910), known by his pen name Mark Twain, was an American writer, humorist, entrepreneur, publisher, and lecturer.
He was lauded as the "greatest humorist this country has produced", and William Faulkner called him "the father of American literature".
His novels include "The Adventures of Tom Sawyer" (1876) and its sequel, the "Adventures of Huckleberry Finn" (1884), the latter often called "The Great American Novel".
Twain was raised in Hannibal, Missouri, which later provided the setting for "Tom Sawyer" and "Huckleberry Finn".
He served an apprenticeship with a printer and then worked as a typesetter, contributing articles to the newspaper of his older brother Orion Clemens.
He later became a riverboat pilot on the Mississippi River before heading west to join Orion in Nevada.
He referred humorously to his lack of success at mining, turning to journalism for the Virginia City "Territorial Enterprise".
His humorous story, "The Celebrated Jumping Frog of Calaveras County", was published in 1865, based on a story that he heard at Angels Hotel in Angels Camp, California, where he had spent some time as a miner.
The short story brought international attention and was even translated into French.
His wit and satire, in prose and in speech, earned praise from critics and peers, and he was a friend to presidents, artists, industrialists, and European royalty.
Twain earned a great deal of money from his writings and lectures, but he invested in ventures that lost most of it—such as the Paige Compositor, a mechanical typesetter that failed because of its complexity and imprecision.
He filed for bankruptcy in the wake of these financial setbacks, but he eventually overcame his financial troubles with the help of Henry Huttleston Rogers.
He eventually paid all his creditors in full, even though his bankruptcy relieved him of having to do so.
Twain was born shortly after an appearance of Halley's Comet, and he predicted that he would "go out with it" as well; he died the day after the comet returned.
Charles Francis Norton
Charles Francis Norton( 1807 – 1835) was a 19th- century Member of Parliament for Guildford.
Norton was also a Captain of 52nd Light Infantry; son-in- law of Sir Colin Campbell; brother- in- law of writer Caroline Norton
Olivia Langdon Clemens
Olivia Langdon Clemens (November 27, 1845 – June 5, 1904) was the wife of the American author Samuel Langhorne Clemens, better known as Mark Twain.
Greg Penner
Gregory B. Penner( born December 18, 1969) is an American businessman and venture capitalist.
Penner was named the chairman of Walmart on June 5, 2015.
He is the son-in- law of S. Robson Walton and the grandson- in- law of Sam Walton, the founder of Walmart.

Question: Who is the sibling-in-law of Olivia Langdon Clemens?
Answer: Orion Clemens