The defeat of the Northern army was decisive, and Rupert felt the only help lay in Wales and the west of England. But defeat followed defeat. At Naseby the Parliamentary army was again victorious; Bristol surrendered, then Oxford. Nor was this all. Among the king’s nearest advisers were many who disliked Prince Rupert, especially Lord Digby, and when the Prince surrendered Bristol, he saw his opportunity for revenge. Very cleverly he worked on Charles to such an extent that he made it appear as if Rupert had weakly capitulated without any justification, and the king, who all too easily forgot the past, signed an order revoking the military authority and position he had bestowed on his nephew. The Prince was sorely hurt and indignant at this want of confidence. "It is Digby that is the cause of all the distraction," he said quietly, and then proceeded to defend his honour and his action, which he did in a manner that commended itself to all fair-minded men. Having written a full account of the siege, and proved that holding out longer would have only meant a useless sacrifice of valuable lives, he followed this up by going straight to the king at Newark, in spite of having been forbidden to do so by Digby. "I am come, sir," he said, "to render an account of Bristol." At first Charles would not listen, but Rupert insisted on a court-martial, which at last was granted, and which completely cleared him. The king accepted the verdict, but in a half-hearted way, which nettled the Prince, who was already chafing at the unjust accusations made against his honour. A few days later he vigorously fought the battle of another officer who had been dismissed—also the victim of Digby’s jealousy. "No officer," he declared indignantly, "should be deprived of his commission without being able to defend himself against a council of war." In his anger he applied to Parliament for permission to return to Holland, but when the message came that this would only be given on condition that he did not fight again, he indignantly refused the terms. His loyalty was deeper than his anger when it came to the test.