 After the death of Sir Henry Gage (January 1645), Legge succeeded him as governor of Oxford.He received a commission from Rupert authorising him to command in chief all the neighbouring garrisons except Banbury (7 May), and was appointed a Groom of the Bedchamber (12 April).During his governorship Oxford was besieged or blockaded by Thomas Fairfax (May–June 1645).