chiave di braccio, you have found rare clips so I was wondering if you can find any of Glima or whatever is the national style of Finland. I ask because in the 1970s when asked about his German Suplex, or Back Suplay, Karl Gotch said that throw was actually called a Finnish Throw because it was popularized by the Finnish.
I asked some friends to find some caucasian folkstyle wrestling style which influenced sambo and then judo
But i do not have any contact with some viking ancestors or friends :-)
If I'm not mistaken, Glima was developed in Iceland (where I'm from), not Finland.
Check this out: