of Bulgaria. Theodore Gabras, the quasi-independent governor of Trebizond and his son Gregory. Michael Taronites, the brother-in-law of Alexios. Nikephoros Diogenes, the son of emperor Romanos IV. Pseudo-Leo Diogenes , an impostor who assumed the identity of another of Romanos' sons, Leo Diogenes. Karykes, the leader of a revolt in Crete. Rhapsomates, who tried to create an independent kingdom in Cyprus. Post First Crusade Salomon, a senator of great wealth who in 1106 engaged in a plot with four brothers of the Anemas family. Gregory Taronites, another governor of Trebizond. The illegitimate descendant of a Bulgarian prince named Aron formed a plot in 1107 to murder Alexios as he was encamped near Thessalonica. The presence of the empress Irene and her attendants, however, made the execution of the plot difficult. In an attempt to have her return to Constantinople, the conspirators produced pamphlets that mocked and slandered the empress, and left them in her tent. A search for the author of the publications uncovered the whole plot, yet Aron was only banished due to his connection to the royal line of Bulgaria, whose blood also flowed in the veins of the empress Irene. Reform of the monetary system Under Alexios the debased solidus (tetarteron and histamenon) was discontinued and a gold coinage of higher fineness (generally .900–.950) was established in 1092, commonly called the hyperpyron at 4.45 grs. The hyperpyron was slightly smaller than the solidus. It was introduced along with the electrum aspron trachy worth a third of a hyperpyron and about 25% gold and 75% silver, the billon aspron trachy or stamenon, valued at 48 to the hyperpyron and with 7% silver wash and the copper tetarteron and noummion worth 18 and 36 to the billon aspron trachy. Alexios' reform of the Byzantine monetary system was an important basis for the financial recovery and therefore supported the so-called Komnenian restoration, as the new coinage restored financial confidence. Legacy Alexios I had overcome a dangerous crisis and stabilized the Byzantine Empire, inaugurating a century of imperial prosperity and success. He had also profoundly altered the nature of the Byzantine government. By seeking close alliances with powerful noble families, Alexios put an end to the tradition of imperial exclusivity and co-opted most of the nobility into his extended family and, through it, his government. Those who did not become part of this extended family were deprived of power and prestige.