Bertilusonnafnorð karlkyn · FöðurnafnFallbeygingarEt.eintalaFt.fleirtalaEintalaNf.nefnifallBertilusonÞf.þolfallBertilusonÞgf.þágufallBertilusyniEf.eignarfallBertilusonarFleirtalaNf.nefnifallBertilusynirÞf.þolfallBertilusyniÞgf.þágufallBertilusonumEf.eignarfallBertilusona