Edward, who served under Alexander I and David I is called chief of David's knights (princeps militae), but the exact nature of the Constable's military role in the 12th century is unclear. Alexander I (c. ... David I, known as the Saint, (1084 - May 24, 1153), king of Scotland, the youngest son of Malcolm Canmore and of Saint Margaret (sister of Edgar Ætheling), was born in 1084. ...

The Lord High Constable was, after the King, the supreme officer of the Scottish army. He also performed judicial functions as the chief judge of the High Court of Constabulary. The Court, presided over by the Earl or by his deputies, was empowered to judge all cases of rioting, disorder, bloodshed and murder if such crimes occurred within four miles of the King, the King's Council, or the Scottish Parliament. He also held several honorific privileges, such as the right to sit on the right side of the King when he attended Parliament, custody of the keys to Parliament House, the ceremonial command of the King's bodyguards, and precedence above all Scotsmen except the members of the Royal Family and the Lord Chancellor of Scotland. Most of the powers, however, disappeared when Scotland and England combined into Great Britain under the Act of Union 1707. The office, nonetheless, continues as a ceremonial one. The Scottish Parliament (Pàrlamaid na h-Alba in Gaelic, Scots Pairlament in Scots) is the national unicameral legislature of Scotland. ... Precedence is a simple ordering, based on either importance or sequence. ... The Lord Chancellor of Scotland was a senior pre-Union officer in Scotland. ... The Acts of Union were twin Acts of Parliament passed in 1707 (taking effect on 26 March) in the Scottish and the English Parliaments. ...

The office became hereditary in the twelfth century and has been held by the family of Hay, later Earls of Erroll since 1314. The Constable and the Duke of Hamilton (as Earl of Angus) may sit as assessors to the Lord Lyon King of Arms. The Earl of Erroll, Lord High Constable, is one of three peers entitled to appoint a private pursuivant, with the title "Slains". The title Earl of Erroll is an ancient one in the Peerage of Scotland. ... Events June 24 - Battle of Bannockburn. ... The Mausoleum of the Dukes of Hamilton sits in the grounds of the old Hamilton Palace in Hamilton The Duke of Hamilton is a title in the Peerage of Scotland created in 1643. ... The title of Earl of Angus is an ancient one in the Peerage of Scotland, currently held by the Duke of Hamilton. ... Arms of the Office of the Lord Lyon The Lord Lyon King of Arms, the head of Lyon Court, is the Scottish official with responsibility for regulating heraldry in that kingdom, issuing new grants of arms, and serving as the judge of the oldest Heraldic court in the world that... A Pursuivant is a minor herald. ...