Old Portuguese eu

← Spanish yo (cognate)

← Proto-Indo-European *éǵh₂ (inherited)

← Proto-Italic *egō (inherited)

← Latin ego (inherited)

← Mozarabic yo (cognate)

← Old Leonese you (cognate)

← Old Leonese yo (mention)

→ Galician eu (inherited)

→ Portuguese eu (inherited)