Clan Douglas
Lord Maxwell was also at feud with the powerful Clan Douglas over the Earldom of Morton, which he regarded as his inheritance. For this quarrel he was imprisoned in Edinburgh Castle in 1607. After escaping, he shot Sir James in the back during a meeting held "under trust", and he fled to France. He was convicted of treason in his absence and sentenced to death. On his return to Scotland in 1612 he was arrested, and was beheaded at Edinburgh on 21 May 1613.