to oppose Bute and assert what they believed to be Whig principles dating back to the political conflicts of the previous century. The faction was heavily dominated by wealthy aristocrats, and because of Newcastle's advanced age, effective leadership soon came into the hands of the very wealthy young aristocrat the Marquess of Rockingham, who soon gave his name to the group.

Although the Rockingham Whigs were briefly brought into power in 1765, following the fall of the ministry