Benjamin Sumner Welles, Jr. (January 11, 1857 – December 24, 1935) was an American philanthropist who was a descendant of many prominent Colonial families.^[1]

Welles was born in Boston, Massachusetts on January 11, 1857. He was one of five children born to Katharine Elida Schermerhorn (1828–1858) and Benjamin Sumner Welles (1823–1904),^[2] a dry-goods merchant who was a descendant of Colonial Gov. Thomas Welles and Gov. Increase Sumner. His siblings included Helen Schermerhorn Welles,^[3] who married George Lovett Kingsland (son of Mayor Ambrose Kingsland), and Harriet Katherine Welles.^[4]

His mother was one of nine children born to his maternal grandparents,^[5] Abraham Schermerhorn, a wealthy New York City merchant, and Helen Van Courtlandt (née White) Schermerhorn of the Van Cortlandt family.^[6] Through his grandfather, he was descended from Jacob Janse Schermerhorn, who settled in New York from the Netherlands in 1636.^[7] His maternal aunt was Caroline Schermerhorn Astor, known as "the Mrs. Astor", who was married to the immensely wealthy William Backhouse Astor Jr., and was considered the Gatekeeper of New York Society during the Gilded Age.^[8]

Among his many cousins were Emily Astor, who married the politician James J. Van Alen,^[9] Helen Schermerhorn Astor,^[10][11] who married the diplomat James Roosevelt (the elder half-brother of President Franklin Delano Roosevelt), and John Jacob Astor IV,^[12] who married Ava Lowle Willing and, later, married socialite Madeleine Talmage Force, before perishing aboard the Titanic in 1912.^[13]

Welles graduated from Harvard College in 1878,^[4] of which his family had been producing graduates dating back to 1707 with Samuel Welles.^[14] He also spent at year at Columbia Law School.^[15]

Following a year spent at law school, Welles spent a year and a half in Europe travelling. Following his "grand tour," he returned to New York City and was engaged in the business of managing his family affairs.^[15] Following his marriage in 1886, the newlyweds spent a year together in Europe.^[15] He was an officer of the 27th Assembly District Republican Club, which he stated in 1901, was the "only 'anti-machine' one in New York. Largely through our efforts a good majority was secured for a son of Harvard, Governor Roosevelt."^[15]

Welles was the treasurer of the House of Rest, a philanthropic sanitarium near Yonkers, and belonged to the Society of Colonial Wars, University Club of New York, Union Club of the City of New York, and the Harvard Club of New York.^[4]

On Wednesday October 27, 1886,^[19] Welles was married to Frances Wyeth Swan (1863–1911)^[20][21] at the West Presbyterian Church in New York by the Rev. Dr. Howard Crosby. She was the daughter of Frederick George Swan, an attorney,^[22] and Emily (née Wyeth) Swan.^[23] The Welles lived at 6 West 37th Street in New York City.^[22] Together, they were the parents of two children:

• Emily Frances Welles (1888–1962),^[24] who, in 1908,^[25] married banker Harry Pelham Robbins (1874–1946),^[26] who was the son of Henry Asher Robbins, a founder of the Waltham Watch Company,^[26] and the nephew of George H. Bend.^[4]
• Benjamin Sumner Welles III (1892–1961), the United States Ambassador to Cuba and United States Under Secretary of State during Franklin D. Roosevelt's administration. He married three times before his death in 1961.^[27]

After his wife's death, he resided at the St. Regis Hotel in New York,^[4] and maintained a home in Islip, New York on Long Island.^[28]

Welles died of pneumonia on December 26, 1935, at the Presbyterian Hospital in New York City.^[4] He was buried at the Woodlawn Cemetery in the Bronx. In his will, he bequeathed $10,000, in trust, which provided that the money shall be used for a scholarship, to be known as the Benjamin Welles Scholarship, from which the income was to be paid to any deserving undergraduate descendant of Benjamin Welles, Harvard Class of 1800.^[28] If no descendant needs financial assistance, the income could be used to pay for another undergraduate in the discretion of the president of the University.^[28]