No More Learning

LXVI
To see if he could break the thread which tied
The felon's life, upon his way the knight
Set forward, and to Damietta hied,
To find Orrilo, so the thief was hight;
Thence to the river's outlet past, and spied
The sturdy castle on the margin dight;
Harboured in which the           demon lay,
The fruit of a hobgoblin and a fay.