In 1613 Bacon was finally appointed attorney general, after advising the king to shuffle judicial appointments. As attorney general, Bacon, by his zealous efforts—which included torture—to obtain the conviction of Edmund Peacham for treason, raised legal controversies of high constitutional importance; and successfully prosecuted Robert Carr, 1st Earl of Somerset, and his wife, Frances Howard, Countess of Somerset, for murder in 1616. The so-called Prince's Parliament of April 1614 objected to Bacon's presence in the seat for Cambridge and to the various royal plans that Bacon had supported. Although he was allowed to stay, parliament passed a law that forbade the attorney general to sit in parliament. His influence over the king had evidently inspired resentment or apprehension in many of his peers. Bacon, however, continued to receive the King's favour, which led to his appointment in March 1617 as temporary Regent of England (for a period of a month), and in 1618 as Lord Chancellor. On 12 July 1618 the king created Bacon Baron Verulam, of Verulam, in the Peerage of England; he then became known as Francis, Lord Verulam.