King Robert II died at Dundonald Castle in Ayrshire on 19 April 1390 and the chronicler Wyntoun informs that Robert was not buried at Scone until 13 August 1390, only a day before his son John, Earl of Carrick was crowned King as Robert III. Fife was retained as Guardian of Scotland probably much against Buchan's hopes as he must have looked at some sort of volte-face on some of Fife's actions, particularly as Buchan reached his zenith of possessions under Carrick. On top of this, Bishop Bur turned to Thomas Dunbar, Sheriff of Inverness and son of the Earl of Moray to provide his protection. The events of May and June 1390 in the Laich of Moray were perhaps the result of a combination of factors that presented themselves to Buchan. Firstly, John Dunbar, Earl of Moray and his fellow northern landowner Sir David Lindsay of Glenesk both absented themselves from Moray to attend a substantial tourney at Richard II of England's court. In addition, Bishop Bur's involvement with Buchan's estrangement with his wife and then Bur's alignment with Moray presented an opportunity for revenge culminating in the destruction of Forres in May and then Elgin with its cathedral in June. His destruction of the church possessions in Elgin was complete—as well as the cathedral, the monastery of the Greyfriars, St Giles parish church and the Hospital of Maison Dieu were all put to flame. Church and state now came together to oppose him—excommunicated by Bur, Buchan had to appear at the Church of the Friars Preacher, in Perth in the presence of his brothers, King Robert III of Scotland and the Earl of Fife, and the council-general to plead for forgiveness—absolution was granted by bishop Walter Trail, Bishop of St Andrews.