He had hardly returned when his work was undone.

In 1368 Henry reentered Castille; its towns threw open their gates; a general rising chased Pedro from the throne, and a final battle in the spring of 1369 saw his utter overthrow.

His murder by Henry's hand left the bastard undisputed master of Castille.

Meanwhile the Black Prince, sick and disheartened, was hampered at Bordeaux by the expenses of the campaign which Pedro had left unpaid.

To defray his debt he was driven in 1368 to lay a hearth-tax on Aquitaine, and the tax served as a pretext for an outbreak of the long-hoarded discontent.