The reason of it was that one of them was that same Master Anthony Baine who had witnessed the affront offered Sir Oliver.

He declared that whatever had happened to Master Godolphin as a consequence was no more than he deserved, no more than he had brought upon himself, and he gave it as his decision that his conscience as a man of honour would not permit him to issue any warrant to the constable.
Sir Oliver received this news from that other witness, the parson, who himself had suffered such rudeness at Godolphin's hands, and who, man of the Gospel and of peace though he was, entirely supported the Justice's decision--or so he declared.
Sir Oliver thanked him, protesting that it was kind in him and in Master Baine to take such a view, but for the rest avowing that he had had no hand in the affair, however much appearances might point to him.
When, however, it came to his knowledge two days later that the whole countryside was in a ferment against Master Baine as a consequence of the attitude he had taken up, Sir Oliver summoned the parson and straightway rode with him to the Justice's house at Truro, there to afford certain evidence which he had withheld from Rosamund and Sir John Killigrew.
"Master Baine," he said, when the three of them were closeted in that gentleman's library, "I have heard of the just and gallant pronouncement you have made, and I am come to thank you and to express my admiration of your courage." Master Baine bowed gravely.

He was a man whom Nature had made grave.
"But since I would not that any evil consequences might attend your action, I am come to lay proof before you that you have acted more rightly even than you think, and that I am not the slayer." "You are not ?" ejaculated Master Baine in amazement.
"Oh, I assure you I use no subterfuge with you, as you shall judge.

I have proof to show you, as I say; and I am come to do so now before time might render it impossible.

I do not desire it to be made public just yet, Master Baine; but I wish you to draw up some such document as would satisfy the courts at any future time should this matter be taken further, as well it may." It was a shrewd plea.