Sir Roger also possessed in his own right the manors of Bletchington and Holton, Oxfordshire, Standon in Hertfordshire, Caythorpe in Lincolnshire, and Knaresborough and St. Briavels' Castles.
He fought at the Battle of Bannockburn where he provided "good services", following which he was granted the manors of Sandal, Yorkshire and Vauxhall, Surrey, in 1317.
He was summoned to parliament on 20 November 1317, and in the 11th (1318), 12th (1319), 13th (1320) and 14th (1321) years of the reign of King Edward II, whereby he is held to have become Lord d'Amory.
He had been a favourite of King Edward II of England until he was displaced by Hugh Despenser the Younger.
Retreating before the King's forces, being either sick or wounded he was left behind at Tutbury Castle, Staffordshire, where he was captured on 11 March 1322 (1321/1322).