Alice Claypoole Gwynne Vanderbilt

Cornelius Vanderbilt, known throughout his life as the Commodore, was an American shipping and railroad magnate who built the largest private fortune in the United States of his day. Born on Staten Island, New York, into a family of Dutch descent whose father worked as a boatman, he began with a single sailing barge in New York Harbour as a teenager, expanded into steamboats on the Hudson and on coastal and transatlantic routes, then moved into railroads after the Civil War, consolidating the New York Central system and building Grand Central Depot in Manhattan. He married his first cousin Sophia Johnson and, after her death, Frank Armstrong Crawford. Of his thirteen children he entrusted the fortune almost entirely to his eldest surviving son, William Henry Vanderbilt. A gift of one million dollars in 1873 founded Vanderbilt University in Nashville.

William Henry Vanderbilt was an American railroad executive who, on inheriting the bulk of his father Cornelius Vanderbilt's estate in 1877, nearly doubled the family fortune in eight years and left about two hundred million dollars at his death. Born in New Brunswick, New Jersey, he was long dismissed by his father as unfit for business and sent to farm on Staten Island, where his success in running the Staten Island Railway won him a place in the family enterprises. As president of the New York Central and Hudson River Railroad he extended the system westward and built the twin mansions on Fifth Avenue. With his wife Maria Louisa Kissam he had eight children, including Cornelius Vanderbilt II, William Kissam Vanderbilt and George Washington Vanderbilt II, and he divided his estate far more evenly among them than his father had.

Frank Armstrong Crawford Vanderbilt was the second wife of Cornelius Vanderbilt, whom she married in 1869, and a distant cousin of his through her mother. Born in Mobile, Alabama, and given a man's name after a family friend, she was educated in the South and was some forty five years younger than her husband. She is remembered chiefly for persuading him to make the gift of one million dollars that in 1873 endowed the Central University of the Methodist Episcopal Church, South, in Nashville, renamed Vanderbilt University in his honour; the institution's founder, Bishop Holland McTyeire, was her kinsman. She had no children with Vanderbilt and survived him by eight years.

William Kissam Vanderbilt was an American railroad executive, thoroughbred breeder and yachtsman, the second son of William Henry Vanderbilt. Born at New Dorp on Staten Island, New York, he managed the family's railroad interests alongside his brother Cornelius Vanderbilt II before withdrawing from business to concentrate on racing in France and on collecting. With his first wife Alva Erskine Smith he built the Petit Chateau at 660 Fifth Avenue and Marble House at Newport, and used the celebrated costume ball of 1883 to force open the doors of Mrs Astor's New York society. Their children were Consuelo, Duchess of Marlborough, William Kissam Vanderbilt II and Harold Stirling Vanderbilt. After his divorce in 1895 he married Anne Harriman.

Emily Thorn Vanderbilt was a daughter of William Henry Vanderbilt and Maria Louisa Kissam and a philanthropist in New York City. She married William Douglas Sloane of the furnishings firm W. and J. Sloane in 1872, and with him built Elm Court at Lenox in the Berkshires, one of the largest shingle style houses in America. She was a principal benefactor of the Sloane Hospital for Women in New York, endowed with her husband, and of institutions at Lenox and in the city. Widowed in 1915, she married the diplomat Henry White in 1920. Sister of Cornelius Vanderbilt II, William Kissam Vanderbilt and George Washington Vanderbilt II, she lived to the age of ninety three.

Frederick William Vanderbilt was an American railroad director and yachtsman, the third son of William Henry Vanderbilt. Born at New Dorp on Staten Island, New York, and educated at Yale, he sat on the boards of more than twenty railroad companies, including the New York Central, and was reckoned the most capable investor of his generation of the family, increasing his inherited share many times over. He and his wife Louise built a Beaux Arts mansion at Hyde Park, New York, designed by McKim, Mead and White, now preserved as the Vanderbilt Mansion National Historic Site. The couple had no children, and much of his fortune passed to a niece and to Vanderbilt and Yale universities.

George Washington Vanderbilt II was an American art collector and estate builder, the youngest child of William Henry Vanderbilt and the creator of Biltmore House near Asheville, North Carolina, the largest private residence in the United States. Born at New Dorp on Staten Island, New York, he was a scholarly man who read widely in several languages and never entered the railroad business. From 1889 he assembled some 125,000 acres in the North Carolina mountains and commissioned Richard Morris Hunt to design a French Renaissance chateau there, with grounds by Frederick Law Olmsted and a pioneering programme of scientific forestry. He married Edith Stuyvesant Dresser in 1898; their only child was Cornelia Stuyvesant Vanderbilt.

Consuelo Vanderbilt, Duchess of Marlborough, was an American born duchess, memoirist and social reformer, the daughter of William Kissam Vanderbilt and Alva Erskine Smith. Born in New York City, she was pressed by her mother into marrying Charles Spencer-Churchill, 9th Duke of Marlborough, in 1895, a match that brought a large Vanderbilt settlement to Blenheim Palace and made her the most famous of the American heiresses who married into the British aristocracy. In England she campaigned for prisoners' welfare and for working women and served on the London County Council. Separated from Marlborough in 1906, she married the French airman Jacques Balsan in 1921 and later wrote the memoir The Glitter and the Gold.

William Kissam Vanderbilt II, known as Willie K., was an American motor racing pioneer, yachtsman and amateur naturalist, the elder son of William Kissam Vanderbilt and Alva Erskine Smith. Born in New York City, he set a world land speed record in 1904, founded the Vanderbilt Cup automobile races on Long Island and built the Long Island Motor Parkway, one of the first roads designed for cars alone. He later made a series of long ocean voyages aboard his yachts Ara and Alva, collecting marine and ethnographic specimens that he housed in his own museum at Centerport on Long Island, now the Vanderbilt Museum. He held directorships in the New York Central system and served in the United States Navy in the First World War.

John Albert Edward William Spencer-Churchill, 10th Duke of Marlborough, was a British peer, the elder son of the 9th Duke and Consuelo Vanderbilt and therefore a grandson of William Kissam Vanderbilt. Educated at Eton, he served in the Life Guards in the First World War and again in the Second, during which Blenheim Palace, which he had inherited in 1934, was given over first to a relocated school and then to government intelligence work. He sat in the House of Lords, held county office in Oxfordshire, and worked to keep Blenheim intact by opening it more fully to visitors. He was a first cousin once removed of Winston Churchill.

Lord Ivor Charles Spencer-Churchill was a British art collector, the younger son of the 9th Duke of Marlborough and Consuelo Vanderbilt. Educated at Eton and at Christ Church, Oxford, and free of the duties that fell to his elder brother the 10th Duke, he devoted himself to modern painting, assembling a notable collection of French Impressionist and Post-Impressionist works that he lent to public exhibitions in London. He was close to his mother and spent long periods with her and Jacques Balsan in France. He remained a largely private figure, known chiefly within the art world, and died in 1956.