Fornham St Genevieve, battle of, 1173. Henry the Young King, eldest son of Henry II, rebelled in 1173. The support of Louis VII of France and William the Lion of Scotland made the revolt formidable. Henry II beat off an attack on Normandy, leaving Richard de Lucy, justiciar, to defend England. In September Robert, earl of Leicester, landed in Suffolk. De Lucy marched to intercept the rebels. On 17 October at Fornham St Genevieve, north of Bury St Edmunds, he defeated and captured the earl of Leicester.