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.
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
Nick Sidi
Nick Sidi( born 22 February 1966 in Manchester, England) is an English actor.
He is the son -in- law of actress Rosalind Knight and brother- in- law of actress Susannah Elliott- Knight.
He often plays drama or comedy roles on television and frequently appears in BBC dramas.
Eusebius (consul 359)
Flavius Eusebius( died after AD 371) was a Roman Senator, who was the brother- in- law of the emperor Constantius II.
John Harvey Kellogg
John Harvey Kellogg (February 26, 1852 – December 14, 1943) was an American medical doctor, nutritionist, inventor, health activist, anti-masturbation advocate, and businessman.
He was the director of the Battle Creek Sanitarium in Battle Creek, Michigan.
The sanitarium was founded by members of the Seventh-day Adventist Church.
It combined aspects of a European spa, a hydrotherapy institution, a hospital and a high-class hotel.
Kellogg treated both the rich and famous and the poor who could not afford other hospitals.
Disagreements with other members of the church led to a major schism within the denomination:
Kellogg was disfellowshipped in 1907, but continued to follow many Adventist beliefs and directed the sanitarium until his death in 1943.
Kellogg also helped to establish the American Medical Missionary College in 1895.
The College operated independently until 1910, when it merged with Illinois State University.
Kellogg was a major leader in progressive health reform, particularly in the second phase of the clean living movement.
He wrote extensively on science and health.
His approach to "biologic living" combined scientific knowledge with Adventist beliefs, promoting health reform, temperance and sexual abstinence.
His promotion of developing anaphrodisic foods was based on these beliefs.
Many of the vegetarian foods that Kellogg developed and offered his patients were publicly marketed: Kellogg is best known today for the invention of the breakfast cereal corn flakes, originally intended to be an anaphrodisiac, with his brother, Will Keith Kellogg.
His creation of the modern breakfast cereal changed "the American breakfast landscape forever."
Kellogg was an early proponent of the new germ theory of disease, and well ahead of his time in relating intestinal flora and the presence of bacteria in the intestines to health and disease.
The sanitarium approached treatment in a holistic manner, actively promoting vegetarianism, nutrition, the use of enemas to clear "intestinal flora", exercise, sun-bathing, hydrotherapy, and abstention from smoking tobacco, drinking alcoholic beverages, and sexual activity.
Hypatius (consul 359)
Flavius Hypatius( c. 340- died after AD 383) was a Roman Senator, who was the brother- in- law of the Roman emperor Constantius II.
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.
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
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.
Ella Eaton Kellogg
Ella Eaton Kellogg (April 7, 1853 - June 14, 1920) was an American pioneer in dietetics who taught and wrote on the subject.
She was educated in Alfred University (B.A. 1872, A.M. 1875); and the American School Household Economics (1909).
In 1875, Kellogg visited the Battle Creek Sanitarium, became interested in the subjects of sanitation and hygiene, and a year later enrolled in the Sanitarium School of Hygiene.
Later on, she joined the editorial staff of "Good Health" magazine, and in 1879, married Dr. John Harvey Kellogg, superintendent of the Battle Creek Sanitarium.
Kellogg was prominently identified with the Woman's Christian Temperance Union (WCTU), in 1882 being appointed national superintendent of the Department of Hygiene.
Three years later, she was appointed associate superintendent of the Social Purity department of the WCTU.
Out of her experiences in the Social Purity work in the WCTU, grew a pamphlet, in 1890, entitled "Talks to Girls" which enjoyed an extended circulation.
Other books written by Kellogg included "Studies in Character Building" (1905), and "Science in the Kitchen" (1892).
Kellogg charter member of the Michigan Woman's Press Association.

Question: Who is the sibling-in-law of Ella Eaton Kellogg?
Answer: Will Keith Kellogg