Old Saxon er

← Old English ær (cognate)

← Old English ār (cognate)

← Old English ār (cognate)

← Proto-Germanic *aiz (inherited)

← Proto-Germanic *airuz (inherited)

← Proto-West Germanic *airi (inherited)

← Gothic 𐌰𐌹𐍂𐌿𐍃 (cognate)

← Old Norse árr (cognate)