Austen began writing Emma in January of 1814 and completed the book in March of 1815, about 14 months later. The book was eventually released in December of that year.

Kelly, Gary. "Jane Austen." British Romantic Novelists, 1789-1832, edited by Bradford Keyes Mudge, Gale, 1992. Dictionary of Literary Biography Vol. 116. Gale Literature Resource Center, https://link.gale.com/apps/doc/H1200002367/LitRC?u=sand82993&sid=LitRC&x.... Accessed 17 Nov. 2020.

https://link.gale.com/apps/doc/H1200002367/LitRC?u=sand82993&sid=LitRC&x...