We cannot be sure how far Mr.Grenville's "Diary" is to be trusted for transactions in which he was not personally concerned, or for conversations at which he was not present; but in giving an account[91] of some of the occurrences of the spring of 1766, while Lord Rockingham was Prime-minister, we find him relating a conversation between the King and Lord Mansfield on the ministerial measure for conciliating the American Colonies by the repeal of the Stamp Act, combined, however, with an assertion of the _right_ to tax.

"He (Lord Mansfield) took notice of the King's name having been bandied about in a very improper manner; to which the King assented, saying he had been very much displeased at it, as thinking it unconstitutional to have his name mentioned as a means to sway any man's opinion in any business which was before Parliament; and that all those who approached him knew that to be his sentiment.

Lord Mansfield said he differed from his Majesty in that opinion, for that, though it would be unconstitutional to endeavor by his Majesty's name to carry questions in Parliament, yet where the lawful rights of the King and Parliament were to be asserted and maintained, he thought the making his Majesty's opinion in support of those rights to be known was very fit and becoming." The line here alleged to have been drawn by the great Chief-justice, between proclaiming the King's opinion in support of rights, but withholding it in the case of measures, is, perhaps, too fine to be perceptible by ordinary intellects.

But however the King may have understood the judge, it is clear that the doctrine thus asserted does not justify, but condemns, such an act as the communication of the King's opinion and wishes in the case under consideration.

If it "would be unconstitutional to endeavor by his Majesty's name to carry questions in Parliament," it must be at least equally so to use his name to defeat them.