 While both were abroad, it is alleged that Clifford challenged Nithsdale to single combat, and that Douglas even went to France to obtain special armour for the fight.Clifford, however, died on 18 August 1391, but Nithsdale is said to have kept their 'tryst', and whilst walking upon the bridge leading to the main gate at Danzig was "killed by the English".The burghers of Danzig decided that "upon account of a signal service which the Douglas family did to this city in relieving it in its utmost extremities against the Poles, the Scots were allowed to be free burghers of the town".