The King quite believed, I think, that the army were his friends. He said as much to Fairfax when that general, Oliver Cromwell, and Ireton, went to persuade him to return to the custody of the Parliament. He preferred to remain as he was, and resolved to remain as he was. And when the army moved nearer and nearer London to frighten the Parliament into yielding to their demands, they took the King with them. It was a deplorable thing that England should be at the mercy of a great body of soldiers with arms in their hands; but the King certainly favoured them at this important time of his life, as compared with the more lawful power that tried to control him. It must be added, however, that they treated him, as yet, more respectfully and kindly than the Parliament had done. They allowed him to be attended by his own servants, to be splendidly entertained at various houses, and to see his children – at Cavesham House, near Reading – for two days. Whereas, the Parliament had been rather hard with him, and had only allowed him to ride out and play at bowls.
It is much to be believed that if the King could have been trusted, even at this time, he might have been saved. Even Oliver Cromwell expressly said that he did believe that no man could enjoy his possessions in peace, unless the King had his rights. He was not unfriendly towards the King; he had been present when he received his children, and had been much affected by the pitiable nature of the scene; he saw the King often; he frequently walked and talked with him in the long galleries and pleasant gardens of the Palace at Hampton Court, whither he was now removed; and in all this risked something of his influence with the army. But, the King was in secret hopes of help from the Scottish people; and the moment he was encouraged to join them he began to be cool to his new friends, the army, and to tell the officers that they could not possibly do without him. At the very time, too, when he was promising to make Cromwell and Ireton noblemen, if they would help him up to his old height, he was writing to the Queen that he meant to hang them. They both afterwards declared that they had been privately informed that such a letter would be found, on a certain evening, sewed up in a saddle which would be taken to the Blue Boar in Holborn to be sent to Dover; and that they went there, disguised as common soldiers, and sat drinking in the inn-yard until a man came with the saddle, which they ripped up with their knives, and therein found the letter. I see little reason to doubt the story. It is certain that Oliver Cromwell told one of the King’s most faithful followers that the King could not be trusted, and that he would not be answerable if anything amiss were to happen to him. Still, even after that, he kept a promise he had made to the King, by letting him know that there was a plot with a certain portion of the army to seize him. I believe that, in fact, he sincerely wanted the King to escape abroad, and so to be got rid of without more trouble or danger. That Oliver himself had work enough with the army is pretty plain; for some of the troops were so mutinous against him, and against those who acted with him at this time, that he found it necessary to have one man shot at the head of his regiment to overawe the rest.
The King, when he received Oliver’s warning, made his escape from Hampton Court; after some indecision and uncertainty, he went to Carisbrooke Castle in the Isle of Wight. At first, he was pretty free there; but, even there, he carried on a pretended treaty with the Parliament, while he was really treating with commissioners from Scotland to send an army into England to take his part. When he broke off this treaty with the Parliament (having settled with Scotland) and was treated as a prisoner, his treatment was not changed too soon, for he had plotted to escape that very night to a ship sent by the Queen, which was lying off the island.