The Barony of Keith Marischal is mentioned in many royal charters and Great Seals of Scotland through the centuries. To the left is a well-preserved Royal Charter from 1294, which, on the order of John Balliol, King of Scotland [Johannes Dei Gratia, Roi Scotia, omnibus probis homminus, or John, by the Grace of God, King of Scotland, to all good men], outlines the rights of the Barony of Keith Marischal.
The Baronial system was invented in France during the reign of Charlemagne, King of France, Germany and much of Italy AD 768 –814. Given that Charlemagne brought unity to much of Western Europe for the first time since the fall of Rome, the land was simply too vast for him to exercise control over directly by himself. Rather, the King assigned land to be held by hereditary barons, who in turn upheld the rule of law in their respective territories, collected taxes, and raised troops for the King. Over the next few centuries, the barons and lords of Europe became its nobility. The Normans made the arrangement systematic. In Scotland, lordships and baronies emerged in the 12th and 13th centuries.
Whilst many baronies became extinct for reasons of succession, war or politics, Keith Marischal has stood the test of time and remains one of the oldest extant (still existing) Baronies - in Scotland, and in the world. These Dignities are a reminder of a time when Europe was ruled by kings, queens, and the rules of chivalry.
Legend has it that Keith lands were first granted in the year 1010 to the Camus slayer after the battle of Barry. As there is no surviving charter, we need to move to the early 12th century for surviving written evidence.
What can safely be said is that Keith existed as a royal territory before AD 1124. A grant of lands in Keith in the reign of Alexander I (1107-1124) given to Dumferline Abbey is recorded and later confirmed by King David I in 1128. King David I divided the Keith lands c. 1150 among two Baronial families, with Sir Simon Fraser receiving the southeast part (Keith Symon or Keith Hundeby) and the Keiths through Hervey fitz Warin receiving the northwest (Keith Hervey). The families and estates were united in marriage before AD 1225 through the marriage of Philip de Keith, son of Hervey, to Eda, granddaughter of Sir Simon Fraser. These holdings are recorded in AD 1160 and 1176 through recorded church donations.
For more than half a millennium, the Barons of Keith Marischal would have extensive rights in their territory, including 'pits and gallows,' i.e., the right to imprison criminals and impose the death penalty for more serious offenses, raising a small army of their own to support the King in terms of war, to hold their own court, and so forth.
The Barons of Keith Marischal stayed true to Scotland and its rulers and were pivotal in securing Scotland's independence during the Wars of Scottish Independence. The 8th Baron of Keith Marischal, Robert de Keith, was a signatory of the Declaration of Arbroath, Scotland's own declaration of Independence, in addition to leading the decisive cavalry charge at the Battle of Bannockburn, forcing the English longbow archers to flee the field.