Campbell of Argyll Modern Tartan Heavyweight 16ozClan Campbell Clan Campbell was powerful in the West of Scotland and in Argyllshire. They were known for their race, the clan of Diarmid who was granted the Lordship of Lochow in the 13th century. Colin Campbell of Lochow, the father of the Campbells from Argyll received a knighthood in the year 1280. The next chiefs were Earls of Argyll as well. In 1701 William of Orange conferred a Dukedom to the 10th Earl. The 9th Earl was executed in 1685 due to