Efstathios is of Greek origin, derived from the Greek word 'efstathes', meaning 'successful'. This uncommon yet distinctive name consists of three syllables: /e-fsta-thi-os/. It was popularized during the Byzantine Empire and has since been used throughout Greece and among the Greek diaspora. Pronunciation can vary slightly across regions, but it is often softened with a silent 'h' sound at the end.
"Efstathios had a notable increase in popularity around the turn of the century, with peak years being 1972, 1979, and 2006, each having 8 births."