Old Irish lár

← Old English flōr (cognate)

← Proto-Celtic *ɸlārom (inherited)

← Welsh llawr (cognate)

← Proto-Indo-European *pleh₂- (root)

← Proto-Indo-European (inherited)

← Proto-Indo-European *pleh₂- (mention)

→ Irish lár (inherited)

→ Scottish Gaelic làr (inherited)

→ Manx laare (inherited)

→ Old Irish agad (link)