Yes, I believe!This surname apparently derives from the given name Χάρις
It's more than enough! : )I think I can handle this question. Márkaris/Μάρκαρης would be pronounced in a way very similar to the way that the word Márkaris would be pronounced in Spanish (with the rhotics as voiced alveolar trills and emphasis as indicated by the diacritic). Charitos, however, is not pronounced as it would be in Spanish. The "Ch" of this, "X" in Greek, represents a voiceless velar fricative (pronounced like "kh", or like the "ch" in the Hebrew phrase "le chaim!"/"to life!"). I believe that in Greek this is Χάριτoς, the pronunciation of which would be as if spelled "Kharitos", with the emphasis on the "a". This surname apparently derives from the given name Χάρις, and that from the Ancient Greek noun χᾰ́ρῐς ("charm"/"grace"), whence also our English word "charisma".
There you have it...probably more than you wanted to know!