[2] In 1331 Sir Robert de Lawedre of The Bass was Keeper of the Scottish Marches and Custodian of the Castle of Berwick-upon-Tweed, receiving a fee attributed to those positions, at Pentecost, of £33.6s.8p.

In 1333 Alexander Seton was again governor of the town of Berwick,[5] while Patrick de Dunbar, Earl of March was entrusted with the defence of the castle.

[5] A small party of Scots led by Sir William Keith managed with some difficulty to make their way across the charred ruins of the old bridge to the northern bank of the Tweed and were able to force their way through to the walled town, which sat below the castle.

King Edward III of England viewed it differently, and as the town had not surrendered by the agreed date, saw this as a breach of the agreement and hanged Thomas Seton within sight of the besieged and his parents.

In this month, in a double tragedy, Seton's son William drowned in an attack upon the English fleet at Berwick, again in sight of his father.

As a Knight of the Order he was granted safe-conduct dated 12 August 1348 to enable him to visit King David II of Scotland, who was imprisoned within the Tower of London.