Marriage and family
Appleton met Franklin Pierce after he moved to Amherst to study law at Bowdoin. One anecdote suggests that they met during a thunderstorm when he implored her not to sit under a tree for risk of lightning strikes. Another suggests that they were introduced by Alpheus Packard, Jane's brother-in-law and one of Franklin's professors. She may also have met him while he was visiting her mother's home. Appleton's family opposed the relationship for a number of reasons, including their difference in class, his poor manners, his drinking, his tolerance of slavery, his Episcopalian beliefs, and his political aspirations. They courted for seven years, including a period in which Franklin moved to Hillsborough, New Hampshire, to practice law and serve in the New Hampshire General Court. Franklin and Jane married in a small ceremony on November 19, 1834, by which time Franklin was a member of the House of Representatives. They were seen as opposites, Jane's reclusiveness and depression contrasting with Franklin's gregariousness and public aspirations.
The Pierces went together to Washington, D.C., after their marriage, but Jane found the city unpleasant. In 1835, she attended the White House New Year's Day reception with her husband and met President Andrew Jackson. She decided to leave the city later that year, returning to her mother's home in Amherst while her husband remained in Washington. The Pierces later purchased a home in Hillsborough where Jane chose to live while Franklin was away. They moved to Concord, New Hampshire, in 1838 while Franklin was a senator, and Jane encouraged him to resign and retire from politics in 1842. Jane abhorred politics, and her distaste for the subject created a tension that continued throughout her husband's political ascent. Though politics was often a point of debate or argument between the two, they were otherwise warm with one another and wrote each other regularly when apart.
Franklin and Jane had three sons, all of whom died in childhood. Franklin Jr. was born in 1836 and died three days after his birth. Frank Robert was born in 1839 and died in 1843 at age four of epidemic typhus. Benjamin was born in 1841 and died in 1853 at age 11 in a train accident. Following the end of her husband's term in the Senate, Pierce was able to live a domestic life with her family together at home. Franklin provided for the family with his law practice, though he briefly went away to serve as a brigadier general in the Mexican–American War. This period of Jane's life is often regarded as her happiest, as her husband was out of politics and she still had two surviving sons. Their house was sold during the war, and the family made various living arrangements over the following months. President James K. Polk offered Franklin an appointment as United States Attorney General, but he turned it down due to Jane's objection. After the death of their second son, Pierce focused on raising their only surviving son, Benjamin, in a strict religious manner while her husband operated his law practice. She wholly dedicated herself to Benjamin and avoided any obligations beyond her family and her religion. Pierce did not carry out housework due to her health, so it was carried out by a married couple that Franklin hired to care for Jane and Benjamin while he was away.