The son of William Scott of Harden, Wat was born in 1550, when he was recognised as his father's heir by precept of clare constat, by Alexander Home, 5th Lord Home, his father's feudal superior.
An infamous freebooter, Wat led raids across the border and against his fellow countrymen. In 1592, he was one of those charged with taking part in an attempt to capture King James VI at Falkland Palace, led by the Earl of Bothwell, and was declared a rebel and outlaw.
In 1567, Wat Scott contracted to marry Mary Scott, daughter of John Scott of Dryhope, and known as the "Flower of Yarrow". When supplies were low she allegedly presented a set of spurs on a platter instead of meat, implying that the Scotts should ride out and replenish them from their neighbours' herds.[1]