When Jane Austen began the writing of Sense and Sensibility in 1795, the title she gave to her manuscript was Elinor and Marianne; also, she wrote it in epistolary form. In the course of subsequent rewritings during 1797-1798, Austen abandoned the epistolary form and renamed it Sense and Sensibility. Two centuries later, British novelist Emma Tennant wondered what the novel would have looked like had Austen kept the epistolary form, and chose to tell the continuation of Elinor and Marianne’s lives by means of an exchange of letters in her sequel to Sense and Sensibility.
As well as recovering the original epistolary form, Tennant additionally titled her sequel Elinor and Marianne.…
Gomez-Galisteo, M. Carmen. "Elinor and Marianne". The Literary Encyclopedia. First published 13 November 2008
[http://www.litencyc.com/php/sworks.php?rec=true&UID=5417, accessed 20 January 2017.]