Children: Robert Lincoln, Edward Baker (10 March 1846 - 1 February 1850), William Wallace (21 December 1850 - 20 February 1862), Thomas (4 April 1853 - 15 July 1871).
In the early 1830s, he met Mary Owens from Kentucky when she was visiting her sister. Late in 1836, Lincoln agreed to a match with Mary if she returned to New Salem. Mary did return in November 1836, and Lincoln courted her for a time; however, they both had second thoughts about their relationship. On August 16, 1837, Lincoln wrote Mary a letter suggesting he would not blame her if she ended the relationship. She never replied and the courtship ended.
n 1840, Lincoln became engaged to Mary Todd, who was from a wealthy slave-holding family in Lexington, Kentucky. They met in Springfield, Illinois, in December 1839 and were engaged the following December. A wedding set for January 1, 1841, was canceled when the two broke off their engagement at Lincoln's initiative. They later met again at a party and married on November 4, 1842, in the Springfield mansion of Mary's married sister. While preparing for the nuptials and feeling anxiety again, Lincoln, when asked where he was going, replied, "To hell, I suppose."
In 1844, the couple bought a house in Springfield near Lincoln's law office. Mary Todd Lincoln kept house, often with the help of a relative or hired servant girl. Robert Todd Lincoln was born in 1843 and Edward Baker Lincoln (Eddie) in 1846. Lincoln "was remarkably fond of children", and the Lincolns were not considered to be strict with their children. Edward died on February 1, 1850, in Springfield, probably of tuberculosis. "Willie" Lincoln was born on December 21, 1850, and died on February 20, 1862. The Lincolns' fourth son, Thomas "Tad" Lincoln, was born on April 4, 1853, and died of heart failure at the age of 18 on July 16, 1871. Robert was the only child to live to adulthood and have children. His last descendant, grandson Robert Todd Lincoln Beckwith, died in 1985.
The deaths of their sons had profound effects on both parents. Later in life, Mary struggled with the stresses of losing her husband and sons, and Robert Lincoln committed her temporarily to a mental health asylum in 1875. Abraham Lincoln suffered from "melancholy", a condition which now is referred to as clinical depression.
Lincoln's father-in-law was based in Lexington, Kentucky; he and others of the Todd family were either slave owners or slave traders. Lincoln was close to the Todds, and he and his family occasionally visited the Todd estate in Lexington. He was an affectionate, though often absent, husband and father of four children.