A clue—certainly, for a long time, the only clue—arrived in 1943 with the invention of the damaged spangenhelm helmet in Ringerike, Norway. Found out in nine fragments among a cache of weaponry and various burial artefacts, the piece – named Gjermundbhu, once the farm exactly where it was identified – https://documentarchiving92467.blogdon.net/viking-relics-for-dummies-51407651