Greek surnames often reflect a person's ancestry, profession, or geographical origin. Many surnames are derived from the father's name, using the suffixes “-poulos” (meaning son) or “-ou” (meaning of). For example, the name Nikolaidis indicates "son of Nikolaos." Additionally, some Greek surnames are based on occupations, such as Papadopoulos, meaning "son of the priest." Others may reference locations, like Athens, indicating someone from the city. These naming conventions provide insight into family history and cultural heritage in Greece.