From the Massachusetts Historical Society:
4561LOUISA CATHERINE JOHNSON ADAMS, the wife of John Quincy Adams, was born in London on 12 February 1775, the second daughter of Joshua Johnson of Maryland and Catherine Nuth Johnson. Her father represented the Maryland firm of Wallace, Davidson, and Johnson in London. From 1778 to 1783, while England and France were at war, the Johnson family lived in Nantes, France, and Louisa and her older sister boarded at a convent school for several years. Following the peace the Johnson family returned to London where Joshua Johnson served as the first U.S. consul (1790-1797). Louisa and John Quincy Adams became engaged in 1796 when the latter, then U.S. minister to the Netherlands, was in London for the ratification of Jay's Treaty. They married in that city on 26 July 1797, in the parish church of All Hallows Barking.
Louisa accompanied her husband on his diplomatic assignments to Berlin (1797-1801), St. Petersburg (1809-1815), and London (1815-1817). When John Quincy's career called the couple to Washington the Adamses lived at first (1803-1808) with Louisa's family, who had settled there following the collapse of Joshua Johnson's London business in 1797. During their later residence at the capitol the Adamses' social life was particularly demanding. Louisa hosted weekly receptions at their home on F Street when John Quincy Adams was secretary of state and presided as first lady at dinners and levees in the White House.
Louisa stayed on at the F Street residence following John Quincy's death in 1848. She suffered a stroke the following year and died on 15 May 1852. Of particular note in the Adams Papers are Louisa Catherine Adams' autobiographical writings ("Adventures of a Nobody," "Record of a Life, or My Story," "Narrative of a Journey from Russia to France, 1815") and her journal letters to her in-laws, John and Abigail Adams.