Ochiltree was responsible for the coronation of King James II of Scotland, and he obtained a grant from the crown which allowed the comparatively small diocese of Dunblane to attain historically unprecedented viability.
Bishop William Stephani had appointed Ochiltree as dean following the death of the previous dean, probably Donald de Bute; however, the pope appointed John Stewart, M.A., B.L., who was rector of the parish of Flysk and bastard son of King Robert II of Scotland.
As part of a large group of ambassadors including John Cameron, Bishop of Glasgow and Henry de Lichton, Bishop of Aberdeen, he was sent to England in January 1430 in order to secure peaceful relations while King James dealt with troublesome vassals within his own kingdom.
In this year he persuaded the government of James II to grant the bishopric of Dunblane large tracts taken from the earldom of Strathearn, in royal hands since the execution of its last earl, Walter Stewart, in 1437.
[2] Ochiltree's career rise and the success of his episcopate were due, in large part, to the relationship he had with the Scottish royal family.
[8] As well as the 1442 grant, he is remembered as having built the "Bishop's Bridge" between Ardoch and Muthill, and to have reconstituted the church at the latter location.
[14] Cockburn, minister and historian, asserted that "Since Clement, no Bishop of Dunblane had occupied the See with such comprehensive competence as Michael".