Mary Lorillard Barbey (April 17, 1841 – April 10, 1926) was a prominent American member of New York Society during the Gilded Age. She was a daughter of Pierre Lorillard III of the Lorillard Tobacco Company.^[1]

Mary Lorillard was born on April 17, 1841. She was the daughter of Pierre Lorillard III (1796–1867)^[2] and Catherine Anne (née Griswold) Lorillard (1809–1856).^[3] Her siblings included Pierre Lorillard IV;^[4][5] Catherine Lorillard,^[6] who married James Powell Kernochan;^[7][8] Jacob Lorillard;^[9] George Lyndes Lorillard,^[10] who married Marie Louise La Farge, the sister of John La Farge^[11] (and who later became Countess de Agreda after she married the Spanish-Mexican Count de Agreda);^[12][13][14] Louis Lasher Lorillard, who married Katherine Livingston Beeckman,^[15] sister of Governor Robert Livingston Beeckman;^[16] and Eva Lorillard,^[17] who married Lawrence Kip.^[18]

Her paternal grandparents were Pierre Lorillard II, a prominent tobacco manufacturer and real estate tycoon for whom the term "millionaire" was first used,^[19] and Maria Dorothea (née Schultz) Lorillard.^[20] His mother's family owned "the great New York mercantile house of N. L. & G. Griswold, known to their rivals as "No Loss and Great Gain Griswold," importers of rum, sugar, and tea."^[19]

Mrs. Barbey and her daughter Eva were included in the infamous "Four Hundred" of New York Society, as dictated by Mrs. Astor and Ward McAllister and published in The New York Times on February 16, 1892.^[21] The number 400 was reportedly the number of people who would fit into Mrs. Astor's ballroom.^[22]

Barbey and her husband were members of the Tuxedo Club and built one of the earliest residences in Tuxedo Park, New York, which was founded by her family.^[23] She was also a member of the Colonial Dames of America.^[1] In summer,^[24] the Barbeys were residents of Bellevue on Lake Geneva in Switzerland, where her husband was born in 1832.^[25] Her husband was a founding member, and a member of the vestry for 31 years, of Emmanuel Episcopal Church, also known as "The American Church," in Geneva. He donated the land for the construction of the church building, and partially financed its construction and running during the early years.^[26]

On January 12, 1865,^[27] she was married to Henry Isaac Barbey (1832–1906).^[28][29] He was a son of Henry Barbey and Marie Helen Iselin. Through his mother, he was a nephew of Adrian Georg Iselin and cousin of Charles Oliver Iselin. Barbey was a financier and a director of the Buffalo, Rochester and Pittsburgh Railway.^[23] They lived at 17 West 38th Street in New York City.^[30] Together, they were the parents of:^[31]

• Hélène Barbey (1868–1945), who married Hermann Alexander, Count von Pourtalès (1847–1904) in 1891^[32] after the death of his first wife, Marguerite Marcet. They both competed in the 1900 Summer Olympics, with Hélène becoming the first woman to win a gold medal.^[33] Pourtalès was a captain of the Cuirassiers of the Guard.^[34]
• Henry G. Barbey (1873–1938),^[35] who married Sabine Wood (née Struthers) Beekman (1889–1950), the former wife of Dr. Fenwick Beekman, in 1934.^[36] He served as president of the board of governors of the New York Hospital.^[37]
• Ethel Lynde Barbey (1873–1959), who married Ambrose Lanfear Norrie (1857–1910) in 1895.^[38] After his death, she married Count Odet Armand Marie de Jumilhac, a relative of the Duke of Richelieu.^[39]
• Marguerite "Rita" Barbey (1876–1955), who married Gilbert Compton Elliott (1871–1931), son of Frederick and Lady Charlotte Elliot and grandson of Admiral George Elliot and Sir James Carnegie, 5th Baronet, in 1910.^[30]
• Eva Barbey (1879–1943), born in Bellevue, baptised Eveline,^[40] who married André Poupart, Baron de Neuflize (1875–1926), eldest son of Jean de Neuflize, in 1903.^[41][42] His younger sister was Roberte Ponsonby, Countess of Bessborough. They lived in Paris and Neuilly, France.^[43]
• Mary Lorillard Barbey, who married Alfred Seton Jr. (b. 1853)
• Pierre Lorillard Barbey, born 25 March 1882 in Paris,^[40] a Harvard graduate who married Florence Flower, daughter of James de Laral Flower, in 1907.^[44][45]

Her husband died at their home in Bellevue on July 9, 1906.^[40][46] His estate was valued at $6,581,051 at the time of his death, which she inherited.^[46] Barbey moved to Paris, France living at 45 Avenue l'Alma, where she died on April 10, 1926.^[1][40] She was buried in Genthod^[40] or Bellevue.