trust', later applied after the Massacre of Glencoe in 1692 was introduced in 1587 to reduce the endemic feuding that resulted. Opponents now had to use the Crown to settle disputes and it applied to murder committed in 'cold-blood' i.e. once articles of surrender had been agreed or hospitality accepted. The first recorded use was the 1588 prosecution of Lachlan Maclean, whose objections to his new stepfather, John MacDonald, resulted in the murder of 18 members of the MacDonald wedding party. In 1568, the Scottish Reformation established a national kirk that was Presbyterian in structure and Calvinist in doctrine; by 1640, less than 2% of Scots were Catholics, concentrated in places like South Uist, controlled by Clanranald but despite its minority status, fear of Popery remained widespread. This excluded the MacDonalds from power and split them into Catholic and Presbyterian factions; this would have fatal consequences for the Glencoe MacDonalds in 1692. The 1638-1651 Wars of the Three Kingdoms caused huge dislocation and damage throughout the British Isles; in 1641, the Scottish Covenanter government sending an expeditionary force that joined the vicious and bloody Irish Rebellion. All sides committed atrocities, leading to a series of tit for tat responses, exacerbated by long-standing animosities; in 1642 on Rathlin Island, soldiers from a predominantly Clan Campbell-recruited unit led by Sir Duncan Campbell threw scores of MacDonnell women over the cliffs to their deaths on rocks below.The Carolingian Era , macdonnellofleinster.org. Retrieved 28 August 2008 Scotland initially stayed neutral in the First English Civil War but became involved in 1643; the shifting alliances only make sense if one understands that in Scotland, both Royalists and Covenanters agreed the institution of monarchy was divinely ordered but disagreed on the nature and extent of Royal authority versus that of the church. This makes it hard to categorise clans as wholly 'Royalist,' 'Catholic' or later 'Jacobite.' In 1644, Alasdair Mac Colla landed in Scotland with 1500 Irish troops to link up with the Scottish Royalists; Alasdair was from Clan Donald of Dunnyveg, which historically held lands in the western Scottish islands and North-East Ireland. They joined up with Montrose and played a leading role in the 1644-1645 campaign; this was highly successful, with victory at the Battle of Inverlochy leaving Montrose in effective control of Scotland. Inverlochy and the entire Montrose campaign is often presented as a clan battle between Campbells and MacDonalds; while there is