Well, the Roman identity remained strong, principally among Greek speakers. What's interesting about the 1820s rebellion is precisely that it was consciously promoting a "Hellenic" or "Greek" identity, rather than a "Romioi" identity, for the first time. And, apparently, it was a concept that the intelligentsia glommed onto. It took awhile for your peasant classes to warm up to a term that had traditionally been associated with pagans.
Fascinating. Were Greek rebellions after the fall of the Byzantines but prior to the 1820s rebellions attempts at restoring the Byzantines? Or is there just not enough information to tell?