 From its origins as a modest five room Victorian cottage, the Deanery grew into a sprawling forty-six room mansion which included design features from several notable 19th and 20th century artists.The interior was elaborately decorated with the assistance of the American artist Lockwood de Forest and Louis Comfort Tiffany, de Forest's partner in the design firm Tiffany & de Forest, supplied a number of light fixtures of Tiffany glass.De Forest's design of the Deanery's so-called 'Blue Room' is particularly important as it is often considered one of the best American examples of an Aesthetic Movement interior, alongside the Peacock Room by James Abbott McNeill Whistler.