Dukes in the United Kingdom
Duke, in the United Kingdom, is the highest-ranking hereditary title in all four peerages of the British Isles. A duke thus outranks all other holders of titles of nobility (marquess, earl, viscount and baron).
Baron Trevethin and Oaksey
Baron Trevethin, of Blaengawney in the County of Monmouth, is a title in the Peerage of the United Kingdom. It was created in 1921 for the prominent judge Sir Alfred Lawrence, Lord Chief Justice of England from 1921 to 1922. The first baron's eldest son and heir, Hon. Clive Lawrence, predeceased him; he had been HM Procurator General and Treasury Solicitor from 1923 until his death in 1926. Hence, on the first baron's death, the title passed to his second son, Charles. His third son the Hon. Geoffrey Lawrence was also a noted jurist and served as the main British judge at the Nuremberg trials. In 1947 he was himself raised to the peerage as Baron Oaksey, of Oaksey in the County of Wilts. In 1959 he succeeded his elder brother Charles as third Baron Trevethin, although he continued to be known as Lord Oaksey. the titles are held by his grandson, the fifth Baron Trevethin and third Baron Oaksey, who succeeded in 2012. He is a QC who sits in the House of Lords as a Crossbench excepted hereditary peer following a by-election in 2015.