A portion of old Balvenie Castle, a ruin, is considered to be of Pictish origin, but most of it is in the Scots Baronial.
But Oswio and his son Ecgfrith greatly extended their territories towards the north and north-west, making themselves masters of the kingdoms of Strathclyde and Dalriada, as well as of a large part of the Pictish kingdom.
It is said to have been named Athfotla (Atholl) after Fotla, son of the Pictish king Cruithne, and was under the rule of a Celtic mormaer (thane or earl) until the union of the Picts and Scots under Kenneth Macalpine in 843.
Of the original Pictish inhabitants remains exist in the form of stone circles (three in Unst and two in Fetlar) and brochs (of which 75 examples survive).
The Moot Hill was known also as the Hill of Belief from the fact that here the Pictish king promulgated the edict regulating the Christian church.