Love-Letters Between a Nobleman and His Sister is a three-volume roman à clef by Aphra Behn playing with events of the Monmouth Rebellion and exploring the genre of the epistolary novel. The first volume, published in 1684, lays some claim to be the first English novel. Some scholars claim that the attribution to Behn remains in dispute. The novel is "based loosely on an affair between Ford, Lord Grey of Werke, and his wife's sister, Lady Henrietta Berkeley, a scandal that broke in London in 1682". It was originally published as three separate volumes: Love-Letters Between a Noble-Man and his Sister (1684), Love-Letters from a Noble Man to his Sister: Mixt with the History of Their Adventures. The Second Part by the Same Hand (1685), and The Amours of Philander and Silvia (1687). The copyright holder was Joseph Hindmarsh, later joined by Jacob Tonson.

Aphra Behn was an English playwright, poet, prose writer and translator from the Restoration era. As one of the first English women to earn her living by her writing, she broke cultural barriers and served as a literary role model for later generations of women authors. Rising from obscurity, she came to the notice of Charles II, who employed her as a spy in Antwerp. Upon her return to London and a probable brief stay in debtors' prison, she began writing for the stage. She belonged to a coterie of poets and famous libertines such as John Wilmot, Lord Rochester. Behn wrote under the pastoral pseudonym Astrea. During the turbulent political times of the Exclusion Crisis, she wrote an epilogue and prologue that brought her legal trouble; she thereafter devoted most of her writing to prose genres and translations. A staunch supporter of the Stuart line, Behn declined an invitation from Bishop Burnet to write a welcoming poem to the new king William III. She died shortly after.