WILLIAM DOUGLAS, IST EARL OF DOUGLAS (c. 1327-13S4) had been educated in France, and returned to Scotland in 1348. In 1353 he killed in Ettrick forest his kinsman, William, the knight of Liddesdale (c. 13oa-1353), known as the "Flower of Chivalry," a descendant of a younger son of the original William de Douglas. Some of the Liddesdale lands fell to his kinsman and murderer, who was created earl of Douglas in 1358. In 1357 his marriage with Margaret, sister and heiress of Thomas, 13th earl of Mar, eventually brought him the estates and the earldom of Mar. He was one of the securities for the payment of David IT.'s ransom, and in consequence of the royal misappropriation of some moneys raised for this purpose, Douglas was for a short time in rebellion in 1363. In 1364 he joined David II. in seeking a treaty with England which should deprive Robert the Steward, formerly an ally of Douglas, of the succession by putting an English prince on the Scottish throne. The independence of Scotland was to be guaranteed, and a special clause provided for the restoration of the English estates of the Douglas family. On the accession of Robert II. he was nevertheless reconciled, becoming justiciar of southern Scotland, and the last years of his life were spent in making and repelling border raids. He died at Douglas in May 1384, and was succeeded by his son James. By his wife's sister in-law, Margaret Stewart, countess of Angus in her own right, and widow of the 13th earl of Mar, he had a son G eorge, after wards 1st earl of Angus.