A Serjeant-at-Law (SL), commonly known simply as a Serjeant, was a member of an order of barristers at the English and Irish Bar. The position of Serjeant-at-Law (servientes ad legem), or Sergeant-Counter, was centuries old; there are writs dating to 1300 which identify them as descended from figures in France before the Norman Conquest, thus the Serjeants are said to be the oldest formally created order in England. The order rose during the 16th century as a small, elite group of lawyers who took much of the work in the central common law courts.
With the creation of Queen's Counsel or "Queen's Counsel Extraordinary" (King's Counsel during a male monarch's rule) during the reign of Elizabeth I, the order gradually began to decline, with each monarch opting to create more King's or Queen's Counsel. The Serjeants' exclusive jurisdictions were ended during the 19th century and, with the Judicature Act 1873 coming into force in 1875, it was felt that there was no need to have such figures, and no more were created. The last appointed was Nathaniel Lindley, later a Law Lord, who retired in 1905 and died in 1921. The number of Irish Serjeants-at-law was limited to three (originally one, later two). The last appointment was A. M. Sullivan in 1912; after his 1921 relocation to the English bar he remained "Serjeant Sullivan" as a courtesy title. (Full article...)