That second Google link appears to be a neo-nazi site, which makes me wonder how much credence to give the theory. Lots of the racial theorists in the 1880s were trying to tie together the Israelites/British/New Worlders. It's kind of a racial fantasy.

The top link reads like a conspiracy theory. You grab lots of interesting phenomena and say "we don't have an answer, therefore x" where x is Vikings, aliens, the New World Order, lizards.

It's genuinely an interesting question, the sources are scary though.