Clan Douglas
According to local legend, a large battle occurred on the site of Morningside during the English invasion in 1385. The English sent a force of around 1,000 men to raid Lanarkshire, the Scots met them at "Morranside" in early autumn being commanded by the leaders of Clan Muir and Clan Douglas. The battle ended in a Scottish victory with the English being pushed back to Biggar.