Malcolm Earl of Lennox (1264-1333)  the fifth earl of Lennox.  Owned much of the land around Dumbarton to Cardross.  Joined The Bruce in 1305.  One of the Bannockburn commanders, he covered the ground before him with caltrops ( spiked metal shards which acted as primitive landmines) stopping the English horses from charging his men.  he fought deep into his old age before dying at 69 at the battle of Halidon hill.

 

Clan history
Malcolm the fifth Earl of Lennox (1264-1333) His estates covered most of Dunbartonshire and parts of West Stirlingshire. His great-grandfather owned Dumbarton Castle until 1232 AD when it was taken from him by Alexander II. His land included The Trossachs and Loch Lomond.  He became the Earl in 1303 only after being forced to agree that King Edward the first of England was his rightful king.  He never forgot this injustice and, with the Earl of Atholl, was the first nobleman of Scotland to swear allegiance to King Robert Bruce in 1306.

Like his father, Malcolm (fourth Earl) who supported The Bruce and Wallace rebellions, he was eager to see a true Scottish King on the throne.  The Clan Pharlan (who would become Macfarlane) had been created by his great-uncle Gilchrist and had always fought by the side of the Lennox Earls.  This meant that Malcolm could already bring a whole clan of warriors to fight at King Roberts’s side.  Unfortunately King Robert was defeated in a skirmish at Methven which forced his remaining followers to head to the Lennox lands in the west.
After seeing the Lennox contingent at Methven and learning of Malcolm's true loyalties, the English King gave the Lennox lands to Sir John de Menteith, the man who betrayed William Wallace.