Hervey is said to have denied the authorship of both the pamphlet and its dedication, but a note on the manuscript at Ickworth, apparently in his own hand, states that he wrote the latter. He was able to render valuable service to Walpole from his influence with the Queen. Through him the minister governed Queen Caroline and indirectly George II. Hervey was vice-chamberlain in the royal household and a member of the Privy Council. In 1733 he was called to the House of Lords by writ of acceleration in his father's Barony. He was then elected a governor of the Foundling Hospital prior to its foundation in 1739. In spite of repeated requests he received no further preferment until after 1740, when he became Lord Privy Seal.