Yes and sort of. His wife was Catholic and he certainly wanted more Catholic-type ritual and liturgy in the CofE. But what got the Covenanters up and running was his attempt to turn the Church of Scotland into the Church of England by imposing the CofE's liturgy on the former. Instead, the Covenanters after the First Civil War managed to get Parliament to in effect turn the Church of England into the Church of Scotland by making the former Presbyterian via the Westminster Confession. The Episcopalian party on both sides of the Anglo-Scots border regained the ascendancy in the Restoration of Charles II and wreaked their revenge in the Killing Time from then until the 1690s, with up to 18,000 Scots being murdered, judicially or otherwise; however, much of this violence was Scot on Scot rather than Anglo-Scottish in nature and was complicated in nature by some of the extreme Covenanters renouncing allegiance to Charles II and thus committing treason (in the eyes of the government), so there was a political as well as a religious element.