Robert Monsey Rolfe (1790-1868) was a barrister, a judge and a politician, representing Penryn and Falmouth from 1832 to 1839. He was appointed solicitor-general in 1834, then baron of the Court of Exchequer, later vice-chancellor of the new Court of Appeal in Chancery, and finally lord chancellor from 1852 to 1858. He tried famous cases including the trial of Feargus O'Connor and the Chartists in 1843, was involved in law reform and tried unsuccessfully to create life peers. He received the title Baron Cranworth of Cranworth in Norfolk in 1850.
Montrose family: The title of Duke of Montrose was created in the peerage of Scotland in 1488 for David Lindsay, the 5th earl of Crawford, in reward for his loyalty to James III. He was deprived of the title by a Recissory Act passed by James IV, and then restored but only for his lifetime. When Lindsay died in 1495, the title became extinct. William Graham, married to a niece of the duke, was created earl of Montrose in 1505, and his descendant, James Graham, 5th earl, was given the new title of marquess of Montrose and earl of Kincardine in 1644. The title of duke of Montrose was bestowed for the second time in 1707 on the fourth marquess of Montrose, James Graham, and has remained in the Graham family ever since. The right of the Lindsays to the title was tested in the Montrose Peerage case of 1853, but dismissed.