Augustine Baines, a Benedictine, Titular Bishop of Siga and Vicar Apostolic of the Western District of England, was appointed to Bath in 1817. He purchased the mansion in 1828 for £22,000 and set to work to establish two colleges in either wing of the house, which he dedicated to St. Peter and St. Paul respectively, the former being intended as a lay college, the latter as a seminary. The new college never became prosperous, however. Renovations were made according to designs by Henry Goodridge in 1834 including the addition of the staircase in front of the main building. A gymnasium was also built in the 1830s including a courtyard for Fives, and three barrel vaulted rooms on the first floor and a terrace roof.