of the government of Callinicus an attempt had been made by the
exarch to force the Lombards to renew the two years' peace established
in 599, and on better terms, by the seizure of a daughter of
Agilulf's, then in Parma, with her husband. They were carried off to
Ravenna. But the imperialists got nothing by their treachery. Agilulf
at once moved against Padua and took it and rased it to the ground. In
the following year Monselice also fell to his arms, and though after
the murder of the emperor Maurice in 602 the exarch Callinicus, the
author of the abduction, fell, and Smaragdus was appointed by Phocas,
the hostages were not returned, and in July 603, Agilulf, after a
campaign of less than three months, had possessed himself of Cremona,
Mantua, and Vulturina, and probably of most of those places which the
imperialists had re-occupied in Cisalpine Gaul in 590. Smaragdus was
forced to make peace and to give up his hostages. The peace he made,
which left Agilulf in possession of all the cities he had taken, was
to endure for eighteen months, but it seems to have been renewed from
year to year, and when in 610 Phocas was assassinated and with the
accession of Heraclius (610-641) Smaragdus was again recalled and
Joannes appointed to Ravenna, the same policy seems to have been
followed.

Joannes Lemigius Thrax, as Rubeus, the sixteenth-century historian of
Ravenna, calls him, ruled in Ravenna from 611 to 615, and in the
latter year was assassinated there apparently in the midst of a
popular rising, though what this really was we do not know. His
successor, the eunuch Eleutherius (616-620), seems to have found the
now fragmentary imperial state in Italy in utter confusion, and indeed
on the verge of dissolution. Naples had been usurped by a certain
Joannes of Compsa, perhaps "a wealthy Samnite landowner," who
proclaimed himself lord there, and it is obvious that even in Ravenna
there was grave discontent. Eleutherius soon disposed of the usurper
of Naples, but only to find himself faced by a renewal of the Lombard
war, which he seems to have prevented by consenting to pay the yearly
tribute which perhaps Gregory the Great had promised when he made a
separate peace with the Lombard in 593, when Rome was practically in
the hands of the barbarian. It was obvious that the imperial cause was
failing. That the exarch thought so is obvious from the fact that in
619 he actually assumed the diadem and proclaimed himself emperor in
R