Green was the daughter of a Capt. Green, who was killed at the Battle of Minden in 1759. Her brother was Charles Green (1749-1831), who rose to become a General, a Baronet and Governor of Suriname.
In 1783 she married Thomas David Boswell, with whom she had four children, two of whom, Maria (1788-1811) and Thomas Alexander, survived infancy. She appears to have separated from her husband in 1799 and details of her life after this time are sketchy.1
- 1Main source for this bio is John Stone's article Being Boswell's Brother by John Stone, printed in The Age of Johnson 23 (2015): 205-238.