Presidents with no living descendants:
Abraham Lincoln is a more complicated example. Three of his four sons died young, and only Robert Todd Lincoln had children. Of Robert’s three children, his two daughters married, resulting in three great-grandchildren of the martyred president. Of these, the great-granddaughter Mary Lincoln Beckwith (1898-1975), died unmarried without children. Her elder cousin Lincoln Isham (1892-1971) married but had no children of his own.
Some controversy surrounds Lincoln’s youngest great-grandchild, Robert Todd Lincoln Beckwith (1904-1985), who married three times. His second wife had a son in 1968 with Robert listed on the birth certificate, but in the subsequent divorce proceedings, Robert denied paternity, citing an earlier vasectomy, and doctors testified that Robert was “permanently sterile.” Still this son was paid some money to surrender any claim to Lincoln charities, has the middle name of Lincoln, and declines to discuss the circumstances of his birth.
Warren G. Harding, while having no children with his wife, had an illegitimate daughter with Nan Britton, whose paternity was corroborated more recently with autosomal DNA testing. Harding, like two of the first four presidents, was a stepfather; Washington and Madison were the others. Vice President-elect Kamala Harris will be the first Vice President who is a stepmother.
Thomas Jefferson’s wife had a son by her first marriage who died a few months before she married Jefferson. Woodrow Wilson’s second wife Edith had a son by her first marriage who only lived for a few days, twelve years before her marriage to Wilson.