 Henry now prepared for his next move; after taking as much money as he could from Pisa (Henry ultimately cost Pisa some 2 million florins), he began his long delayed campaign against Robert of Naples on 8 August 1313.His Italian allies were loath to join him, and so his army consisted of some 4,000 knights, while a fleet was prepared to attack Robert’s realm directly.His first target was the Guelph city of Siena, which he began to besiege, but within a week, Henry succumbed to malaria, which fast saw him become seriously ill. Fading rapidly, he left Siena on August 22, and was sheltering in the little town of Buonconvento near Siena when he died on 24 August 1313.