At the time of the Viking invasion of York, the once Roman outpost was named Eboracum. Only once the Vikings settled there did they rename it Jorvik (York).
There are snake carvings on Floki's ship. Floki has been compared to Loke/Loki many times. One of Loke/Loki's punishments was to be tied up in a cave and have a snake drip venom onto his head. Floki seems to believe being lost at sea is a punishment by the Gods and asks them to not let him die there.