. West. p. 282.

*** Clause ix. H. 3, m. 9, and m. 6, d.

The low state into which the crown was fallen, made it requisite for a
good minister to be attentive to the preservation of the royal
prerogatives, as well as to the security of public liberty. Hubert
applied to the pope, who had always great authority in the kingdom, and
was now considered as its superior lord, and desired him to issue a
bull, declaring the king to be of full age, and entitled to exercise in
person all the acts of royalty.[*] In consequence of this declaration,
the justiciary resigned into Henry's hands the two important fortresses
of the Tower and Dover Castle, which had been intrusted to his custody;
and he required the other barons to imitate his example. They refused
compliance: the earls of Chester and Albemarle, John Constable of
Chester, John de Lacy, Brian de l'Isle, and William de Cantel, with some
others, even formed a conspiracy to surprise London, and met in arms at
Waltham with that intention: but finding the king prepared for defence,
they desisted from their enterprise. When summoned to court in order to
answer for their conduct, they scrupled not to appear, and to confess
the design: but they told the king that they had no bad intentions
against his person, but only against Hubert de Burgh, whom they were
determined to remove from his office.[**] They appeared too formidable
to be chastised; and they were so little discouraged by the failure of
their first enterprise, that they again met in arms at Leicester, in
order to seize the king, who then resided at Northampton: but Henry,
informed of their purpose, took care to be so well armed and attended,
that the barons found it dangerous to make the attempt; and they sat
down and kept Christmas in his neighborhood.[***] The archbishop and the
prelates, finding every thing tend towards a civil war, interposed with
their authority, and threatened the barons with the sentence of
excommunication, if they persisted in detaining the king's castles. This
menace at last prevailed: most of the fortresses were surrendered;
though the barons complained that Hubert's castles were soon after
restored to him, while the king still kept theirs in his own custody.
There are said to have been one thousand one hundred and fifteen castles
at that time in England.[****]

* M. Paris, p. 220.

** Chron. Dunst. vol. i. p. 137.

*** M. Paris, p. 221. Chron. Dunst. vol. i. p. 138.