Kastrenopoulou Surname Meaning

The Greek surname Kastrenopoulou (Καστρηνοπούλου / Καστρενοπούλου) is a patronymic surname in feminine form, meaning it indicates family lineage. The root Kastrenos (Καστρηνός / Καστρινός) derives from kastron (κάστρον), meaning “castle” or “fortified settlement,” and historically referred to someone living near or originating from a castle town during the Byzantine period when fortified settlements were central to regional life. The suffix -opoulou (-οπούλου) is the feminine possessive form of -opoulos (-όπουλος), a patronymic ending that became widespread in the Peloponnese during the late Byzantine period, meaning “of the family of” or “daughter of.” Feminine surname forms later became standardized in modern Greek civil records. Consequently, the surname Kastrenopoulou signifies “female member of the Kastrenos family,” reflecting lineage derived from a geographic settlement based identifier.