William IV, Lord of Douglas

There are records of transactions occurring in the exchequer accounts of the Lord Chamberlain of Scotland in 1331 that refer to Willelmus dominus de Duglas.

There is also a record of a complaint by the monks of Coldingham Priory to David II against the Lord of Douglas and his uncle Sir Archibald, in respect of certain manorial lands at Swinton, Berwickshire.

In this the monks claimed that the lands had been given to Lord Douglas' father, Sir James, illegally and with prejudice against the priory at Coldingham.

William of Douglas accompanied his uncle, who had been appointed Guardian of the Realm, to the battlefield of Halidon Hill.

In 1778, excavations at the Auld Kirk at North Berwick uncovered the matrix of the seal of William, Lord Douglas.