Polish Lach

← Old East Slavic *ляхъ (borrowed)

← Polish Lędzianie (mention)

← Russian лях (mention)

← Proto-Slavic *lęxъ (derived)

← Proto-Slavic *lęděninъ (derived)

→ Polish laski (suffix)

→ Polish Laszka (suffix)

→ Russian лях (cognate)