Basil Henriques website
The above is a link to the website of a gentleman named Basil Henriques, who is one of the UK's leading Hawaiian Steel guitarists.
He has researched the story of the Vaqueros more deeply and has come to the conclusion that it is almost certainly a myth.
There were only six of them , three were North Americans, and there is no indication that any of them played anything.
I have the full story on my computer at work, and I will post it later if anyone is interested.
Cheers
Dave