Hello,
what do you think on the version that Håkon Eiriksson (http://en.wikipedia.org/wiki/Håkon_Eiriksson) and Yakun the Blind (http://en.wikipedia.org/wiki/Yakun) are the same person?
The theory as presented seems intriguiing and could be possible, but not compelling enough to say "this is what we should say about him".
Ladejarl Håkon Ericsson seems like the one who's being suggested - in 1024, according to Snorre, he was an earl in England, having escaped Norway after being defeated by Olav Haraldsson.