She was queen consort of Edward II of England from 1308, but returned to France in 1325. She and her lover Roger de Mortimer organized an invasion of England in 1326, forcing Edward to abdicate in favour of his son, who was crowned Edward III after his father’s murder in 1327. Isabella and Mortimer acted as regents for Edward III until 1330, after which Edward took control of the kingdom and Isabella was forced into retirement.