Old Irish áes

← Proto-Celtic *aiwestom (inherited)

← Proto-Indo-European *h₂ey- (root)

← Old Irish áesmar (link)

→ Irish aos (inherited)

→ Irish aois (inherited)

→ Irish aosta (mention)

→ Scottish Gaelic aois (inherited)

→ Manx eash (inherited)

→ Middle Irish áes side (affix)

→ Old Irish áesmar (affix)

→ Old Irish áes síde (affix)