English won absolute control of the narrow seas, and cut off from Louis
all hope of fighting his way back to France. As soon as he heard of the
defeat of Eustace, he reopened negotiations with the marshal. On the
29th there was a meeting between Louis and the Earl at the gates of
London. The regent had to check the ardour of his own partisans, and it
was only after anxious days of deliberation that the party of
moderation prevailed. On September 5 a formal conference was held on an
island of the Thames near Kingston. On the 11th a definitive treaty was
signed at the archbishop's house at Lambeth.

The Treaty of Lambeth repeated with little alteration the terms
rejected by Louis three months before. The French prince surrendered
his castles, released his partisans from their oaths to him, and
exhorted all his allies, including the King of Scots and the Prince of
Gwynedd, to lay down their arms. In return Henry promised that no
layman should lose his inheritance by reason of his adherence to Louis,
and that the baronial prisoners should be released without further
payment of ransom. London, despite its pertinacity in rebellion, was to
retain its ancient franchises. The marshal bound himself personally to
pay Louis 10,000 marks, nominally as expenses, really as a bribe to
accept these terms. A few days later Louis and his French barons
appeared before the legate, barefoot and in the white garb of
penitents, and were reconciled to the Church. They were then escorted
to Dover, whence they took ship for France. Only on the rebellious
clergy did Gualo's wrath fall. The canons of St. Paul's were turned out
in a body; ringleaders like Simon Langton were driven into exile, and
agents of the legate traversed the country punishing clerks who had
disregarded the interdict. But Honorius was more merciful than Gualo,
and within a year even Simon received his pardon. The laymen of both
camps forgot their differences, when Randolph of Chester and William of