On his release he had promised he would maintain the treaty of Arras and withdraw from the Netherlands; but he delayed his departure for nearly a year and took part in a punitive campaign against his captors and their allies.
His captors now required -of him that he should put a curse upon Aristobulus and his faction.
Boniface escaped from his captors only to die (October 11), and the short pontificate of his saintly successor, Benedict XI., was occupied in a vain effort to restore harmony to the Church.
In 1867 they were given over to the Boer government by the Swazis, who had acquired them from their captors.
Then, in May 1248, came the tidings of Enzio's capture by the Bolognese, and of his hopeless imprisonment, the captors refusing all offers of ransom.