Your last link doesn't work, there's an unnecessary parentheses in it.
Do we know what the real script for the episode says? The subtitles might be a spelling error or someone mishearing Clark.
The tribe is apparently somewhat obscure except for the music group, anything short of a deep library search might not have brought it up back in 1993. The first search engines on the web only started out in the second half of 1993. Googling it was certainly not an option.
And whether the information would have been available on the web is questionable, too.
