Þorsteinsbakkinafnorð karlkyn · ÖrnefniFallbeygingarEt.eintalaFt.fleirtalaEintalaNf.nefnifallÞorsteinsbakkiÞf.þolfallÞorsteinsbakkaÞgf.þágufallÞorsteinsbakkaEf.eignarfallÞorsteinsbakka