Edward had spent time growing up in Normandy, and he showed a preference for elevating Norman French subjects over local English or Danish subjects. One such example was Robert of Jumièges. Robert had known Edward in Normandy, and followed him to England where he was made bishop of London in 1043.
In 1051, a new Archbishop of Canterbury was needed. The clergy and monks of Canterbury elected a cousin of Godwin's to the position, but Edwards rejected this and appointed Robert of Jumièges. Robert claimed that Godwin was in illegal possession of some estates that belonged to the See of Canterbury. Moreover, in September of that year Edward's brother-in-law, Eustace II of Boulogne, visited. Edward appointed him castellan (governor) of a castle in Dover. The locals rebelled against this, resulting in fighting and 40 deaths. Dover was within Godwin's earldom, and Edward told Godwin to punish the citizens of Dover who had attacked Eustace. Godwin refused.
This refusal gave Edward the opportunity to deal with Godwin definitively. Robert of Jumièges claimed that Godwin wanted to kill the king, just like he had killed Edward's brother Alfred Ætheling. The other two most powerful earls in England, Leofric and Siward, supported the king against Godwin. Godwin's sons held earldoms, and called up their own men, but none were willing to fight against the king.
An Anglo-Saxon royal chaplain and advisor, Stigand, handled negotiations between the king and Godwin. When he carried the king's message to Godwin, that there could be peace if Godwin could restore Alfred Ætheling, Godwin took the hint: he fled to Flanders while his sons went to Ireland.
The incident with Eustace was obviously a turning point in the relationship between Edward and Godwin, but Robert of Jumièges definitely fanned the flames with his appointment to Canterbury, his claim of illegal possessions, and his claim that Godwin was planning assassination. Before we go further about Edward vs. Godwin (and that relationship is far from over), we should look more closely at Robert, what he did, and what happened to him.
(Note: as significant as Godwin was in his lifetime, there are no depictions of him that I can find. The illustration is of the coat of arms that is attributed to his son, Harold, after he became king. This design is displayed at Winchester Castle.)