Analysis of information sources in references of the Wikipedia article "Peloponnese" in English language version.
Military reports give us fairly accurate data for the time of the colonization : sources report 30,000 Albanian men fit for military service on the Peloponnese around 1425 .
No area suffered more than the Morea, which was pillaged regularly by Albanian gangs over the decades after 1770, despite Istanbul's repeated strictures against Albanians setting foot on the peninsula.
...when the Turks and Albanians reasserted themselves they were merciless; recapturing Patras, they left scarcely anyone alive.
The 1770 revolution ended not only in failure but a prolonged period of devastation and atrocity in the Peloponnesus, committed by Albanian irregulars