Following the Scottish Reformation, the MacLeans became supporters of Protestantism. By the mid-17th century, they had become promoters of conventicles, opposed to king Charles II's repudiation of the Solemn League and Covenant and supporting acts of civil disobedience. Though personally opposed to persecution of such people, Archibald Campbell, 9th Earl of Argyll, was specifically ordered by the Scottish privy council to suppress conventicles within his lands, which included Lorn. The atmosphere of hostility soon spread to Mull, where opponents of the conventicles felt emboldened, leading to outbreaks of violence between the two religious factions.