The Kingdom of Alba refers to the Kingdom of Scotland between the deaths of Donald II (Domnall mac Causantin) in 900, and of Alexander III in 1286 which then led indirectly to the Scottish Wars of Independence. The name is one of convenience, as throughout this period the elite and populace of the Kingdom were predominantly Pictish-Gaels or later Pictish-Gaels and Scoto-Norman, and differs markedly from the period of the Stuarts, in which the elite of the kingdom were (for the most part) speakers of Middle English, which later evolved and came to be called Lowland Scots.
There is no precise Gaelic equivalent for the English terminology 'Kingdom of Alba' as the Gaelic term Rìoghachd na h-Alba means 'Kingdom of Scotland'. English speaking scholars adapted the Gaelic name for Scotland to apply to a particular political period in Scottish history during the High Middle Ages.
Little is known about the structure of the Scottish royal court in the period before the coming of the Normans to Scotland, before the reign of David I. A little more is known about the court of the later 12th and 13th centuries. In the words of Geoffrey Barrow, this court "was emphatically feudal, Frankish, non-Celtic in character". Some of the offices were Gaelic in origin, such as the Hostarius (later Usher or "Doorward"), the man in charge of the royal bodyguard, and the rannaire, the Gaelic-speaking member of the court whose job was to divide the food.
In the 13th century, all the other offices tended to be hereditary, with the exception of the Chancellor. The royal household of course came with numerous other offices. The most important was probably the aforementioned hostarius, but there were others such as the royal hunters, the royal foresters and the cooks (dispensa or spence).