Loss of the Lordship of the Isles fractured Highland society and the MacDonalds in particular, who were left holding lands on either side of the Irish Sea, rather than a unified block of territory. Their attempts to re-establish control destabilised Western Scotland for generations; the charge of 'Slaughter under 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.