Bedford returned to battle, this time on the side of the Royalists, with his participation in the Siege of Gloucester (3 August – 5 September 1643) and the first Battle of Newbury (20 September 1643). On 16 June 1644, the eve of the Second Battle of Newbury, the King's daughter Princess Henrietta was born in Bedford House, Exeter, the Earl's town house in the South-West.