Thomas at once complied with his conqueror’s demands; but his ambition
soon revived when Mohammed had gone. Fresh victories of Skanderbeg
suggested to him the flattering idea that a Palaiologos could do more
than a mere Albanian. Divisions among the Turkish officers in his
old dominions increased his confidence—a quality in which Greeks are
not usually lacking. Early in 1459 he raised the standard of revolt;
but, at the same time, committed the folly of attacking his brother’s
possessions. Phrantzes, who, after having been sold as a slave when
Constantinople fell, had obtained his freedom and had entered the service
of Thomas, has stigmatised in forcible language the wickedness of those
evil counsellors who had advised his master to embark on a civil war and
to “eat his oaths as if they were vegetables.” Most of Thomas’ successes
were at the expense of his brother, for, of all the places lately annexed
by the Turks, Kalavryta alone was recovered. But the Albanians did far
more harm to the country than either the Greeks or the Turkish garrison
by plundering both sides with absolute impartiality and deserting from
Thomas to Demetrios, or from Demetrios to Thomas, on the slightest
provocation. Meanwhile the Turks attacked Thomas at Leondari, at the
invitation of his brother; and the defeat which he sustained induced the
miserable Despot to go through the form of reconciliation with Demetrios,
under the auspices of Holy Church. This display of brotherly love had the
usual sequel—a new fratricidal war; but Mohammed II had now made up his
mind to put an end to the Palaiologoi, and marched straight to Mistra.
Demetrios soon surrendered, and humbly appeared in the presence of his
master. The Sultan insisted upon the prompt performance of his former
command, that the Despot’s daughter should enter the seraglio, and told
him that Mistra could no longer be his. He therefore ordered him to bid
his subjects surrender all their cities and fortresses—an order which
was at once executed, except at Monemvasia. That splendid citadel, which
had so long defied the Franks at the zenith of their power, and boasted
of the special protection of Providence, now scorned to surrender to the
infidel. The daughter of Demetrios, who had been sent thither for safety,
was, indeed, handed over to the Turkish envoys, and Demetrios himself was
conducted to Constantinople; but the Monemvasiotes proclaimed Thomas as
their liege lord, and he shortly afterwards presented Monemvasia to the
Pope, who appointed a governor.