[GSlob]

Recorded contacts with the "screllings" by Leif Ericsson and others were extremely limited, thus I'd doubt they picked the custom in North America.

[Theoden]

Leif Eriksen was Norwegian not Swedish. Actually, the Swedes were operating almost exclusively in Russia and Byzantium, while the other vikings went to North America. I think it may just be coincidental that they did the same types of things with their teeth.

[Pete from Shawnee Mission]

"Skralings" rather than Screllings. Translates to "wretches".