Allenham is a fictional estate in Jane Austen's Sense and Sensibility. Allenham is located in Devonshire and is occupied by Mrs. Smith, the aunt to Mr. Willoughby. Mr. Willoughby, therefore, is the heir to Allenham. Marianne Dashwood and John Willoughby travel here while Mrs. Smith is not home in a scandalous move.

Austen, Jane. Sense and Sensibility, edited by Kathleen Viola James-Cavan, Broadview Press, 2001.

The following is an image from Dryham Park, which is the location in which the film adaptation of Sense and Sensibility films Allenham Park.