Sir David II Strathbogie, Earl of Atholl, Constable of Scotland, and Chief Warden of Northumberland

Sir David II Strathbogie was Earl of Atholl, Constable of Scotland, and Chief Warden of Northumberland.

The Mormaer or Earl of Atholl was the title of the holder of a medieval comital lordship straddling the highland province of Atholl, now in northern Perthshire. Atholl is a special Mormaerdom, because a King of Atholl is reported from the Pictish period. The only other two Pictish kingdoms to be known from contemporary sources are Fortriu and Circinn. Indeed, the early 13th century document known to modern scholars as the de Situ Albanie repeats the claim that Atholl was an ancient Pictish kingdom. In the 11th century, the famous Crínán of Dunkeld may have performed the role of Mormaer.

The Lord High Constable is a hereditary, now ceremonial, office of Scotland. In the order of precedence of Scotland, the office traditionally ranks above all titles except those of the royal family. The Lord High Constable was, after the King of Scots, the supreme officer of the Scottish army. He also performed judicial functions as the chief judge of the High Court of Constabulary. From the late 13th Century the Court – presided over by the Lord High Constable or 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 Parliament of Scotland. Following James VI's move to England, the jurisdiction of the Lord High Constable was defined in terms of the "resident place" appointed for the Council.

Northumberland is a ceremonial county in North East England, on the border with Scotland. It is bordered by the North Sea to the east, Tyne and Wear and County Durham to the south, Cumbria to the west, and the Scottish Borders council area to the north. The town of Blyth is the largest settlement. Northumberland is the northernmost county in England.